What is the Purpose of Our Souls here in This World?

Most people advise another person to take care of their health through good nutrition, regular exercise, meditations, avoidance of harmful environments, stress and so on. As a healthcare profession I think otherwise unlike other doctors and healthcare providers.

Seeking good health is the norm as far as our physical body is concerned. On a much deeper understanding what use are these when no matter how much we take care of our health we still have to die only to leave everything behind, health, wealth and all. On death, we completely leave behind everything we dearly cling on to in this world. This must, and will come that day to come, irrespective of who we are. Disease and death are no respect for any man for sure.    

The other day in one of my blog essays I was writing about the soul as the painter of our life here:

Question: Is the Soul Life Itself, and Life the Soul?

 

https://scientificlogic.blogspot.com/2024/06/question-is-soul-life-itself-and-life.html

 

Do Our Souls Remember the Actions of Our Previous Lives?

 

https://scientificlogic.blogspot.com/2024/06/does-our-souls-remember-actions-of-our.html

 

Our souls paint all the pictures of whatever we do here. This painting is being copied into our soul for another new life just like all the information we store into our DNA is being duplicated and copied into the next cell.

 So, wouldn’t it be much better to take care of our soul to keep it healthy so that it can be copied into our eternal soul than to take care of our temporary physical body like temporary cells in the body that all have limited lifespans?

It is the non-physical entity in our body - our souls that last throughout eternity.  No matter how we take care of our physical body, or no matter how physically fit and healthy we are now, the physical body must end and die that fatal day to come, unless some believe they can live forever because they don’t believe there is a God, and that they have no soul.

 They would describe themselves as a soulless person who does not believe in anything, one who has no feeling, no compassion, no love and no forgiveness for anybody and that they can physically live forever free from death?  That perhaps is their belief, and that is entirely up to them how they describe themselves in this world as an eternally soulless person.  

In other words, they  live only to enjoy a physical existence devoid of any love, compassion and feelings, and their  only enjoyment is to gather and invest on physical wealth, enjoy good food and wine, listen to music of their personal liking, travel around the world to enjoy the sceneries, and come home to enjoy WhatsApp and Tik Tok others sent to them, and care two hoots of anything or anybody  else. That’s their life, not mine for sure. But take extreme CARE! with our souls, not our temporary body and life or our physical enjoyment here.  However, some may believe in the existence of God but have no idea why He created them except to enjoy a temporary life here. They merely waste away their short existence here.

The reason why I argue on this is, since scientists have never come out with an acceptable definition of life except use the acronym MRS GREN to mean movement, respiration, sensitivity, growth, reproduction, excretion and nutrition which to me is not the actual definition of life, but just to describe the characteristics of life, but not life itself.

What we want to know is, what actually causes all these biological molecules to become alive, to be able to display all those characteristics and behaviours of something living if there was no soul in it?  What causes these biological molecules to suddenly become alive, and able to move and breathe on their own. To me, it must be something higher than chemistry, probably a soul, the Master of all life itself. If we can answer this, what then is our purpose here?

 Rememer it was the breath of God when He breathed into the soil to create man as a living soul.  What then is the purpose of our soul to keep us alive?

“God formed man from the dust of the ground and breathed into his nostrils the breath of life; and man became a living soul.”

‎(Genesis 2:7) 

If this was how we came into a living existence, then life is the soul itself, and the soul the life existing in a physical body. In that case, it would be much better to take care of life holistically, than just health or the physical body. Again, we have not answered what then is our purpose here in this world with the existence of our soul that maintains life itself – definitely not the sugars, amino acids, DNA, electrolytes, salts, minerals, vitamins or any other chemicals in the body.  

Giving Grace to God:

Having said that, often than not, most people do not even give grace and thanks to God before a meal. A lot of Christians do, including Muslims, but not all. Like Christians, Muslims do give thanks before a meal, similar to the Christian practice of saying grace. The term for this in Islam is "Bismillah," which means "In the name of Allah (God)." Muslims say "Bismillah" before starting to eat to seek blessings and to acknowledge that the food they are about to consume is provided by Allah.

The same expression of gratitude in Buddhism. Buddhists often express gratitude before meals. Monks and laypeople may recite verses that acknowledge the effort that went into preparing the food and the interconnectedness of all beings. One common chant is the "Mealtime Gatha," which reflects on the food's origins and the need to consume it mindfully.

In Hinduism too the same gratitude. Hindus often offer prayers to express gratitude and seek blessings before meals. A common prayer is the "Brahmaarpanam," which acknowledges that the food is a gift from God and seeks blessings for the meal. Additionally, some might recite the "Annapurna Stotram," which praises the goddess Annapurna, the deity of food and nourishment.

So is in Sikhism where Sikhs usually offer thanks to God before meals with the "Ardas" (a Sikh prayer) or a shorter version known as "Simran." They also emphasize the importance of sharing food (Langar) and often say "Waheguru Ji Ka Khalsa, Waheguru Ji Ki Fateh" (The Khalsa belongs to the Almighty; Victory belongs to the Almighty) before eating.

Not forgetting in Judaism where Jewish people traditionally say a blessing called the "HaMotzi" before eating bread, which is part of many meals. There are also blessings for other types of food. After the meal, a more extended series of blessings called the "Birkat Hamazon" is recited to thank God for the sustenance provided.

In Zoroastrianism, Zoroastrians often say prayers before meals, expressing gratitude to Ahura Mazda (the supreme god) for the food. The "Ashem Vohu" prayer is commonly recited before meals. So is in Jainism where Jains practice a form of prayer called "Pratikraman" before eating, reflecting on the food's purity and the non-violence principle. They also practice fasting and offer gratitude for the food's nourishment.

These practices reflect the diverse ways in which various religious traditions express gratitude and mindfulness regarding food.

Jesus naturally often did this, giving grace before a meal. Just a few examples here will do where we read in Matthew 14:19 that says, “And he (Jesus) directed the people to sit down on the grass. Taking the five loaves and the two fish and looking up to heaven, he gave thanks and broke the loaves. Then he gave them to the disciples, and the disciples gave them to the people."

In John 6:11, "Jesus then took the loaves, gave thanks, and distributed to those who were seated as much as they wanted. He did the same with the fish."

Jesus then feeds 4,000 up on the top of a mountain. This is given in Matthew 15:36: "Then he took the seven loaves and the fish, and when he had given thanks, he broke them and gave them to the disciples, and they in turn to the people."

In The Last Supper (Matthew 26:26-27) it was clearly stated “While they were eating, Jesus took bread, and when he had given thanks, he broke it and gave it to his disciples, saying, 'Take and eat; this is my body.' Then he took a cup, and when he had given thanks, he gave it to them, saying, 'Drink from it, all of you.'"

Yet another example where even Jesus gave grace is found in Luke 22:19: "And he took bread, gave thanks and broke it, and gave it to them, saying, 'This is my body given for you; do this in remembrance of me.'"

These passages illustrate that Jesus consistently gave thanks to God before partaking in a meal,

The reason I write all these reminders is because, when I was a little boy I saw a Chinese man in my hometown in Batu Pahat, Johore, Malaya who was preaching in the streets. But I do not know what religion he followed. There was a small crowd including me following him everywhere. After that, he went to a coffee shop to have his meal. I was astonished to see him lifting up every spoonful of food from his plate, tilted his head slightly backwards, and with an opened mouth gave thanks to God for that spoonful of food before putting it into his mouth.

Wow! that was amazing. He was absoutely devout.  He did that for every spoonful of food, not just for a plate. I thought this may not be necessary, but he did it. He must be extremely thankful for everything he got, even in bits and pieces.  

On hind thought, I think this should be the way as we owe every beat of our hearts and every breath of our lungs to God through the food and nourishment we receive daily.

That for me was indeed a fascinating and touching memory. The practice of giving thanks for each spoonful of food demonstrates a profound level of gratitude and mindfulness. It highlights the importance of being thankful for every small blessing and appreciating the sustenance provided. This level of gratitude is admirable and can be a powerful reminder to all of us to appreciate the small things in life.

But what I personally notice is, not all Christians or Muslims or others with different belief systems give grace before a meal. Like most people, they merely put the food straight away into their mouths without giving any thanks for that daily provision. Sometimes I too make that mistake, not that I am ungrateful, but sometimes I forget or are not mindful enough. Sometimes I neglect this due to my shortcomings and human weaknesses, or my own laziness. But I do seek God for forgiveness after that for my all my mistakes

Many argue there is no reason why they should give thanks to God for that provision because they worked and paid for it with their own money. They argue that it was not God who gave them food, but they personally bought it from the market and supermarkets with their own wealth and money, and there was no reason whatsoever why they need to give grace (thanks) to God?  So, they just conveniently pop the meals into their mouths without a care or a thought.

They say it was the farmer, the food supplier and food manufacturer who produced the food, not God.  This kind of argument suits the ungrateful, and all soulless hearts.

 But they did not explain, or wish to explain what happens if God did not cause the rains to fall, and the seed of life as food to sprout from the soil. They did not explain that it was the stones, rocks and clay on the soil that sprang up alive as living food for them and for all living creatures. They claimed that when their food sprouted out automatically on their own from the dry rocks and soil, and they merely conveniently used their money and their wealth to buy it from the shops and markets. How mindless and ungrateful. Let us remind ourselves that even kings and presidents of any country with all their wealth and powers cannot bring forth stones, bricks, concrete, building and their empires into life as food for them if not for this Grace from God.

In fact, even FAO and all countries are worrying about food security and their ability to feed the growing billions of humans, especially with climate change. Bear this in mind very seriously about famine, starvation, epidemics yet to come. Do not be ungrateful for every morsel of food we put daily into our mouths. Read here:

Food is A Gift from God. Always Say Grace Before a Meal

https://scientificlogic.blogspot.com/search?q=why+we+need+to+give+grace

 Having explained that, it would be much better if we take care of our soul that is eternal and keep it healthy and strong with the least sin possible than taking care of our temporary physical body here. In my spiritual thinking, it would be far better to invest in our soul than to invest in our physical health and wealth for just a maximum of 100 years here in this world.

 In Matthew 16: 25 -26 Jesus warned:

 “For whoever would save his life will lose it, but whoever loses his life for my sake will find it. For what will it profit a man if he gains the whole world and forfeits his soul? Or what shall a man give in return for his soul?”

My perspective on the importance of the soul and the transient nature of the physical body is very relevant to the last dot of our life in this world.  I believe this thinking is profound and resonates too with many spiritual and philosophical traditions.

From a scientific standpoint, life is often defined by the characteristics given as MRS GREN. However, these characteristics describe life as we observe it, rather than explaining its essence. The origin of life, or abiogenesis, remains one of the most profound mysteries in science. Current theories suggest that life arose from a combination of organic molecules and environmental conditions, but the exact mechanisms are not fully understood. The transition from non-living to living matter involves complex processes that are still being explored.

From a spiritual and philosophical viewpoint, many traditions, including Christianity, emphasize the importance of the soul. The passage from Matthew 16:25-26 underscores the value of the soul over worldly gains, aligning with my argument that caring for the soul is paramount.

Other traditions and philosophies also echo this sentiment. For example, in Buddhism it teaches the importance of spiritual development and the cultivation of wisdom, ethical conduct, and mental discipline to achieve enlightenment and liberation from the cycle of rebirth.

In Hinduism it emphasizes the journey of the soul (atman) and its union with the ultimate reality (Brahman). The practice of yoga, meditation, and adherence to dharma (righteous living) are seen as essential for spiritual progress.

Plato's philosophy posits that the soul is immortal and pre-exists before inhabiting a physical body. I strongly support Plato belief too. This has always been my thoughts even long before I did a postdoctoral study on evolutionary biology at the University of Cambridge.

 Plato argues that true knowledge comes from the soul’s recollection of its experiences before birth and that the soul should seek to return to its pure, original state.

In considering the care of the soul, it's essential to integrate physical, mental, and spiritual well-being. While the body is temporary, it serves as the vessel for the soul's experiences and growth. Therefore, maintaining a healthy body can be seen as part of a holistic approach to nurturing the soul.

Ultimately, the balance between caring for the physical body and the soul is a personal journey. Many find that attending to their spiritual needs brings deeper fulfilment and purpose, transcending the temporary nature of physical existence.

I am convinced that with daily spiritual guidance, my view aligns with a holistic approach to life, where spiritual health is prioritized, recognizing the eternal nature of the soul over the transient physical body. This perspective can provide a meaningful framework for living a life of purpose and alignment with higher principles.

The integration of physical, mental, and spiritual aspects provides a holistic approach to understanding and living life. My personal perspective aligns with many spiritual and philosophical traditions that emphasize the interconnectedness of body, mind, and soul.

This is my take for us to live eternally using our souls through the love of Jesus Christ.  

What are, or is yours, unless we admit you say you are soulless person with no purpose in life except to enjoy yourself a physical existence here. That may be yours, definitely not mine for sure!  

Take Care of Your Only Soul. It shall be written in the Book of Life 

ju-boo lim 

Homeopathic Medicine. Do They Work?

 

When I was in school in the late 1950’s I heard of homeopathic medicine. I then thought it was an Indian system of medicine. This belief was reinforced when I went to Calcutta to study where I found there were courses in homeopathic medicine offered as well as on conventional medicine with students in both these two systems of medicines staying together in the same hostel. I did not think much about this as I still thought it was a system of traditional Indian medicine until I went to the University of London for my postgraduate studies.

In one of my trainings in London I went to the world-famous Hospital for Children in Great Ormond St, London WC1N 3HR where to my great surprise I saw the Royal Homeopathic Hospital located just beside the Children Hospital in the same street.

I then wondered how Indian medicine came to London, England. Out of curiosity I went inside the Royal Homeopathic Hospital, and I was amazed the doctors there were also medically qualified in conventional medicine with additional qualifications on homeopathic medicine.

I then found homeopathic medicine is not an Indian system of medicine, but a western medical system founded by a German physician by the name of Samuel Hahnemann (1755-1843). We shall go into that shortly.

But let us for the moment look at how homeopathic medicine came to London, to my amazement of course.

 The London Homoeopathic Hospital was established by Dr Frederick Foster Hervey Quin in 1849.

He was among the first doctors to practice homeopathy in Britain, and had studied with its founder, Hahnemann. The original London Homoeopathic Hospital was in Golden Square, Soho, and was established on 10 October 1849, although it did not receive its first patient until March the following year.

Quin was a prominent figure in London society and very well connected, having been physician to Queen Victoria’s father-in-law Prince Leopold, father of Prince Albert. He was a personal friend of Charles Dickens and godfather to one of his children. Among his other patients were the painter Landseer and the novelist Thackeray. But, despite his connections, Quin was always committed to bringing homeopathy to the people.

The hospital’s first great success came in 1854, when a cholera epidemic broke out in Soho, originating from the water of the Broad Street pump (this was the infamous epidemic which came to an abrupt end when Dr John Snow removed the handle of the pump. At that time, the London Homoeopathic Hospital was the closest hospital to the pumps and achieved remarkable success in treating the victims of the epidemic. The Hospital’s mortality rate was 16 per cent, compared to 53 per cent at the nearby Middlesex Hospital.

Even then there was scepticism towards homeopathy. A report on the epidemic for Parliament the following year omitted the figures from the hospital. These were only published after a thunderous speech in the House of Lords by Lord Grosvenor, Chairman of the Hospital Board.

The Hospital's reputation continued to grow, and homeopathy gained increasing support. Just ten years after its establishment, in 1859 a new and larger Homoeopathic Hospital was built in 1893-5 on its present site in Great Ormond Street and a new wing, facing Queen Square, was added in 1911.

Many well-known homeopathic physicians were associated with the RLHH in the 19th and 20th centuries, including Robert Ellis Dudgeon, John Henry Clarke, James Compton Burnett, Edward Bach, Charles E Wheeler, James Kenyon, Margaret Tyler, Douglas Borland, Sir John Weir, Donald Foubister, Margery Blackie and Ralph Twentyman among others. The famous names are not only doctors, but Miss Marion Brew, ‘Lady Superintendent’ or Matron from 1875 to 1906, was a prominent figure in the nursing profession.

A cache of 300 volumes containing the case notes of 1,426 patients treated from 1889 to 1923 was discovered in the vaults in 1992. This rare material offers a fascinating insight into the Hospital's work during that period.

The Royal Homeopathic Hospital in London has since integrated other alternative and complementary systems of medicine into its service. It has now become The Royal London Hospital for Integrated Medicine as part of the University College London Hospitals under the British National Health Service (NHS)

The Royal London Hospital for Integrated Medicine (RLHIM) is a centre for evidence-based practice, education and research, specialising in chronic and complex medical conditions.

Their mission is to provide a person-centred, holistic approach, including self-care, in order to help people with chronic and complex medical conditions live well and feel better.

Their approach considers the whole person and their environment in the quest for optimal health and wellbeing.

In order to achieve this, the Royal Integrated Medicine Hospital provides a combination of lifestyle strategies, medical, physical and psychological treatment, as well as advice on safe and appropriate use of complementary therapies. They also deliver and encourage self-care approaches which can continue to be used by patients after discharge.

All RLHIM services are outpatient-based and are staffed by experienced healthcare professionals.

The hospital provides an integrated Pharmacy service that includes a retail pharmacy where patients and the public can obtain advice from pharmacists specialising in complementary medicines.

The RLHIM also provides a Complementary and Alternative Medicine Library and Information Service (CAMLIS) that is open to the public with an education department that runs courses for healthcare professionals; and a research department specialising in self-care and integrated medicine approaches to health.

Let’s have a look at the history of medicine in the United Kingdom.

Before the adoption of conventional medicine, treatments in the UK, Europe, and America relied heavily on herbal remedies, folk practices, and rudimentary surgical techniques. The transition to modern medical treatments began in the 19th century with scientific advancements in understanding diseases, developing new drugs, and improving surgical methods. This transformation was further solidified in the 20th century with the industrial production of pharmaceuticals, the establishment of healthcare systems, and the professionalization of medical practice.

For instance, in the United Kingdom where I am more familiar with medicine practised there, during the ancient and medieval periods, before conventional medicine came into existence, herbal medicine was utilized extensively, with remedies derived from plants like foxglove (Digitalis) for heart conditions and willow bark (aspirin's precursor) for pain relief. They also have folk remedies that included charms, amulets, and rituals believed to have healing powers.

Then they went into bloodletting and leeching based on the theory of humours, these practices aimed to balance bodily fluids.

In the 16th - 18th Centuries, came the apothecaries and barber-surgeons that provided herbal remedies and performed basic surgical procedures.

Early hospitals in the UK were institutions like St Bartholomew's Hospital in London began to emerge, focusing on care rather than cures.

The adoption of conventional medicine emerged in the 19th Century with scientific advances.  The germ theory of disease (by Pasteur and Koch) and the development of anaesthesia (by Morton and Simpson) revolutionized surgery and disease treatment.

Then came the understanding of pharmacology with the isolation of active ingredients from plants (e.g., morphine from opium) and the synthesis of new compounds (e.g., chloroform) began. In the UK medical schools began to be established.  The establishment of medical schools and professional societies improved the training of physicians and standardized treatments.

In the 20th Century antibiotics were used.  The discovery of penicillin by Alexander Fleming in 1928 marked the beginning of the antibiotic era. After that in the UK the National Health Service (NHS) was established in 1948. It provided universal healthcare, making modern medical treatments accessible to the entire population.

Almost the same situation was in the rest of Europe and in America, but we shall not dwell into their medical history as this essay will become too lengthy except on the history of homeopathy that arose in Germany, Europe.  

The history of homeopathy started with Samuel Hahnemann (1755-1843) who was a German physician. He developed the practice in the late 1700s. Dissatisfied with the medical practices of his time, Hahnemann proposed an alternative method based on his observation.  Hahnemann published his findings in "Organon of the Medical Art" (1810), outlining the principles of homeopathy. The practice gained popularity in Europe and North America in the 19th century.

It is based on the principles of "like cures like" (similia similibus curentur) and "law of minimum dose," suggesting that substances that produce symptoms in a healthy person can be used to treat similar symptoms in a sick person, and that the lower the dose, the more potent the remedy.

The training in homeopathy can vary by country, but generally includes, like in conventional allopathic medicine, basic medical sciences like anatomy, physiology, pathology, and pharmacology. Homeopathic philosophy and the principles of homeopathy, history, and ethics are then taught. In their Materia medica students study homeopathic remedies, their sources, and their effects.

A homeopathic doctor learns the use of homeopathic repertories, which are indexes of symptoms and remedies. Their clinical training like in conventional medicine includes history and case taking, case analysis, and prescription of remedies.

The practical training is supervised clinical practice with real patients.

The length of a formal course in homeopathy is a full-time course, typically 3-5 years for a diploma or degree in homeopathy.

There are also part-time and online courses that can vary widely in length depending on the institution and country, but I do not recommend this unless they are already medical doctors who want to learn further.

But how does homeopathy work? Homeopathy is based on the idea of stimulating the body's own healing responses. It uses highly diluted substances, which proponents believe trigger the body's natural defences. Remedies are prepared through a process of serial dilution and succussion (vigorous shaking).

The clinical efficacy of homeopathy is highly debated. Proponents claim that homeopathy is effective for a wide range of conditions, from acute illnesses like colds and flu to chronic conditions like asthma and arthritis. But there are also sceptics’ views.  Many in the scientific community argue that homeopathy lacks empirical support and that any positive effects are due to the placebo effect. Studies often show that homeopathic remedies are no more effective than placebo.

As far as I know reviews and meta-analyses typically conclude that there is insufficient evidence to support homeopathy as an effective treatment for any specific condition.

Despite what conventional medical doctors think there are important personalities advocating homeopathy. These personalities, among them, were and are

1.      Mahatma Gandhi advocated homeopathy, referring to it as a "refined method of treating patients economically and non-violently."

2.      Sir Yehudi Menuhin, the late world-famous violinist

3.      Paul McCartney, the former Beatles member, has publicly supported homeopathy.

4.      Cher, the singer and actress, has spoken about her use of homeopathic treatments.

5.      David Beckham, the footballer, has reportedly used homeopathy for his injuries.

6.      And even the Late Queen Elizabeth II and the British royal family including King Charles III all have a long history of using homeopathy.

So, there is something there we cannot ignore.  

While homeopathy remains popular among some groups and has notable advocates, its clinical efficacy is not supported by the majority of scientific evidence. The debate continues, and individuals considering homeopathic treatments should do so in consultation with qualified healthcare professionals and consider the broader body of scientific research.

The clinical efficacy of homeopathy is a contentious issue within the medical community. Numerous studies and reviews have sought to determine whether homeopathic treatments are more effective than placebo.

Some studies report positive outcomes for homeopathic treatments. For example, a meta-analysis by Linde et al. (1997) initially suggested that homeopathic remedies had more than placebo effects. However, these findings were later critiqued for methodological flaws.

Certain randomized controlled trials (RCTs) have found positive effects of homeopathy for specific conditions. However, these are often small-scale studies, and their results are not always replicable in larger, more rigorous trials.

A significant body of research, including a comprehensive meta-analysis by Shang et al. (2005), published in "The Lancet," concluded that the clinical effects of homeopathy are indistinguishable from placebo effects. This analysis indicated that studies with higher methodological quality tend to show less effect for homeopathy.

Reviews and meta-analyses by Ernst (2002) in the "British Journal of Clinical Pharmacology" also found no compelling evidence that homeopathy was effective for any clinical condition beyond placebo.

As far as my own experience is concerned, I had patients who were not cured by conventional hospital drug-based medicine. They were not satisfied with the results of conventional medicine. They then came to me wanting homeopathic treatment instead. Unfortunately, I am not trained in homeopathic medicine, but from their medical history and all the investigations they had earlier, I knew what they suffered.

Fortunately, there were homeopathic pharmacies in Kuala Lumpur with whom I could seek advice. I then wrote out the homeopathic prescription for them and asked them to come back for follow up. But they never did. So, I have no clue on the clinical efficacy of these homeopathic treatments for these patients. I presumed they all got cured and need not come for follow-up anymore.

Nevertheless, homeopathy remains a polarizing topic. While some individuals and practitioners advocate for its use based on personal experiences and historical practice, the majority of scientific evidence does not support its efficacy beyond placebo. But many patients strongly say yes. They said they were cured using homeopathic medicine. So, this controversy continues between conventional drug-based and homeopathic medicines.

But I think it is best that individuals considering homeopathic treatments should also consult with conventional healthcare professionals and consider the broader body of scientific research when making informed decisions about their health. Both can be equally effective because the human body definitely is not some kind of a biochemical machine that can only be cured by some chemicals under the hidden gloried name as “medicines” (drugs). The human body also has a soul, spirit, and a mind, and is definitely not some kind of a biochemistry that can only be altered by chemical drugs and pharmaceuticals

Medicine is extremely challenging and very complex.

References:

 

References on the Systematic Reviews and Meta-Analyses of Homeopathy.

 

National Centre for Complementary and Integrative Health (NCCIH) reports

1.      Shang et al. (2005): This meta-analysis of 110 placebo-controlled trials compared homeopathy and conventional medicine. A comprehensive meta-analysis published in "The Lancet" concluded that the clinical effects of homeopathy are placebo effects. 

2.      Ernst (2002): This review examined multiple systematic reviews and individual trials, finding no reliable evidence supporting homeopathy's efficacy for any medical condition. A review in "British Journal of Clinical Pharmacology" found no compelling evidence to recommend homeopathy for any clinical condition. "A systematic review of systematic reviews of homeopathy." British Journal of Clinical Pharmacology, 54(6), 577-582. 

3.      Australian National Health and Medical Research Council (NHMRC) (2015): This review assessed over 1800 studies and concluded that there are no health conditions for which there is reliable evidence that homeopathy is effective.

4.      Shang A, Huwiler-Müntener K, Nartey L, et al. (2005). "Are the clinical effects of homeopathy placebo effects? Comparative study of placebo-controlled trials of homeopathy and allopathy." The Lancet, 366(9487), 726-732.

This meta-analysis found that when accounting for study quality, homeopathic treatments do not produce effects different from placebos.

This review concluded that there is no condition for which homeopathy has been proven to be an effective treatment.

5.      Linde K, Clausius N, Ramirez G, et al. (1997). "Are the clinical effects of homeopathy placebo effects? A meta-analysis of placebo-controlled trials." The Lancet, 350(9081), 834-843. Initially reported a positive effect, but subsequent analyses highlighted methodological concerns.

6.      "The Organon of the Medical Art" by Samuel Hahnemann.

7.      "Homeopathy: Science or Myth?" by Bill Gray.

 

 

Catapults vs Guns

We were talking about guns, the velocities of their bullets and their ranges yesterday here:

On Guns, Missiles and Weapons of War vs A Peaceful Utopian World Outside Ours

https://scientificlogic.blogspot.com/2024/

 I mentioned that when I was a boy in school the only thing that looked like a gun for me to shoot stones at tins, objects and birds was a catapult.

 I used to make a catapult from a Y or U-shaped branch from a rubber tree, and as a boy I always looked for a V-shaped rubber tree branch in my hometown to make one.  I then cut-out old bicycle rubber tyres from a bicycle shop to power the stones like bullets.

Of course, these days we can easily buy a commercially made catapult from the market cheaply.

But I have always wondered about the speed of these stones, ball -bearings ejected from a catapult as they can be quite powerful to cause a small dent on a milk can.

 Of course, this sounds silly since catapults are not like guns that has a muzzle velocity and the range the stone ejected by a catapult will depend on the rubber used like a sling, its thickness, how long it is, and how far it is being stretched besides the weight or size of stones or pellet used.

 But let us assume on an average, how powerful it is, how high the stone can fly vertically upwards and the range horizontally.  

Catapults, while not as precise as modern firearms, can still demonstrate impressive ranges and projectile heights. The performance of a catapult depends on several factors, including the design (e.g., torsion, traction, or counterweight), the tension or counterweight used, and the weight of the projectile.

Factors influencing catapult performance depends on the design type such as torsion catapult that uses twisted ropes or sinew to store energy.

Then there is the traction catapult that I used to make that relies on hand power. There is also the counterweight catapult (Trebuchet) that uses a heavy counterweight to fling the projectile.

Tension or counterweight ones store the amount of energy in the tensioned element, or the weight of the counterweight significantly affects the power and range.

Projectile weight and lighter projectiles can be flung farther, while heavier projectiles might not travel as far but can cause more damage.

How far the projectile can travel depends on arm length. The longer arms can increase the range by providing greater leverage.

The average performance estimates of ranges of catapults depends on their type and design.  Counterweight catapults (trebuchet) in a well-constructed one can launch a projectile up to 300 meters (approximately 980 feet). Historically, larger trebuchets could achieve ranges of up to 500 meters (1,640 feet) or more.

Whereas torsion catapults can achieve ranges of about 100-200 meters (328-656 feet), depending on the tension and projectile weight.

The maximum height that a projectile from a catapult can reach is influenced by the launch angle, typically 45 degrees for maximum range. For a catapult with a range of 300 meters, the projectile could reach a maximum height of approximately 75 meters (246 feet).

Assuming optimal conditions, a well-constructed trebuchet can reach to a range of 300 meters

An example of calculation is:

For a launch angle of 45 degrees, the range (R) can be estimated using the equation for projectile motion:

R=   v₀²sin (2θ) / g

where v₀ is the initial velocity, θ is the launch angle, and g is the acceleration due to gravity (9.81 m/s²).

Rearranging for v ₀

v₀= √ (Rg / sin 2θ)

Plugging in the value, we have:

V₀ = √ (300 x 9.81 / sin 90 ⁰ )

Approx.  √ 2943

= ≈ 54.24 m/s 

Height Calculation:

The maximum height (H) is given by:

H = v²_u sin ² (θ) / 2 g

Using θ = 45 ⁰ and v _u = 54.2 m /s

H = (54.24)² sin ² (45 ⁰) / 2 X 9.81

= approx. 2943 x 0.5 / 19.62

= approx. 75 meters

Let us now compare a modern gun and a catapult.

Consider a scenario where we want to compare the efficiency of ancient catapults and modern firearms in terms of energy transfer to the projectile. How would we approach calculating the efficiency of both systems, and what factors would we consider in our analysis?

Let me provide some additional insights and clarifications

For a catapult, the energy source is typically the potential energy stored in the tension or torsion system (e.g., twisted ropes, counterweights). The efficiency of energy storage in the catapult mechanism lies in its energy transfer. The efficiency of transferring stored energy to the projectile depends on air resistance and friction, namely, losses due to air resistance and friction during launch.

In modern firearms the energy source is the chemical energy stored in gunpowder or other propellants. The energy release depends on the efficiency of converting chemical energy to kinetic energy of the bullet. In barrel design the barrel affects the efficiency of energy transfer (e.g., minimizing energy losses due to friction and heat).

We also need to consider air resistance and friction.  Loss of energy is due to air resistance and friction as the bullet travels through the barrel and air.

Let’s clarify the energy calculation for a firearm:

The gunpowder energy is 3 MJ / kg = 3000 J/g. The bullet mass (example) is 10 g = 0.01 kg. The gunpowder mass (example) is 30 g = 0.03 kg

Total energy from gunpowder:

Energy =3000 J / g ×30 g =90000 J

Assuming 100% energy transfer to the bullet (which is idealized):

KE = ½ mv²

90000 J = ½ x 0.01 kg x v ²

V² = 90000 x 2 / 0.01

V ² = 18000000

V = √ 18000000

Approx. 4242 m /s

This velocity is extremely high and not realistic due to inefficiencies. A more realistic velocity for bullets is in the range of 300 – 900 m /s

Air resistance, energy loss on conversion, barrel size or design were not considered. We assume 100 % efficiency energy conversion, and the projectile was in a vacuum. 

Readers may be wondering why I go into these physical sciences about catapults, guns and missiles?  I have also been interested in the speeds and power of projectiles. When I was a boy, calculation on speed and range of projectiles like bullets, missiles, slingshots and catapults was beyond me. Today having studied physics and mathematics at university degree level, this is not a problem. I am more interested in astronomy, physics and mathematics than in biological subjects like anatomy, physiology, biochemistry, medicine, nutrition, microbiology, molecular biology, genetics, immunology or in analytical chemistry and evolutionary biology. But I can tolerate forensic science and toxicology. 

 

ju-boo lim