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Awe and wonder

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7 September 2023

6 min read

The heart of the matter

Heart doctor Michael Henein steps back to consider the unseen and unique wonders of the human body’s design.

Michael Henein

Professor Michael Henein is a consultant cardiologist, and a Professor of Cardiology at Umea University, Sweden.

A model of a human heart on a short stand.

Photo by Jesse Orrico on Unsplash.

Shakespeare famously asked:

“What a piece of work is a man, how noble in reason, how
infinite in faculties, in form and moving how express and admirable, in action how like an angel, in apprehension how like a god! the beauty of the world, the paragon of animals—and yet, to me, what is this quintessence of dust?

Humans may be complex, capable of great heroism and deep depravity, yet it is worth stopping for a moment to look at the human body and mind to marvel in what we have become, and how we are made.

The visible design of the human body points out common features shared along with other members of the animal kingdom. Examples of these features are: two eyes, two ears, two nostrils, one mouth and four limbs, attached to a body and head. Detailed study of different seen parts of the body may, however, show some differences. For example, the presence of fingers and nails, hair distribution as well as a developed tail. While most members of the animal kingdom have teeth and a tongue, those two could also vary in their number and size, respectively, according to different species. Genetic investigations have shown that we humans share 99 % of our genes with animals, suggesting that our “earthly” component shares a common origin. Indeed, the twenty first century scientific findings match what is written in the Genesis story of creation, a story written over 3,500 years ago, well before genetic sciences came to light.

Creatures great and small

As for morphological differences between animal species, it is difficult to naively conclude why some are wild while others are man-friendly-even if the wild ones have different shapes, design, dietary habits, body size and life span. Other important observed features of the members of the animal kingdom are that they are all born, they all age, then ultimately die.

If we are to look at the unseen features of the members of the animal kingdom, we can again identify similarities. For example, all have a gastrointestinal tract, a cardiovascular system, a reproductive system, a respiratory system, a urinary system and much more. While these systems may differ slightly between species, the overall structure and function achieve similar purposes. For example, heart speed is faster in small animals like rats compared to big ones like elephants who have very slow hearts. Likewise, the respiratory system and the number of respiratory cycles per minute are significantly faster in running animals compared to the sedentary and slowly moving ones. Finally, the number of offspring also differs in different species, being just one at a time in big animals like elephants and horses, and many offspring in small animals like rabbits and mice. Such paradox between the number of offspring and animal size makes you think of the important determining role of the activity of those animals.

Unseen wonders

Now to turn to the rest of the animal kingdom and the unseen features of the human body. To start, let us look at the amazing functions of the human brain and its various functions. When humanity is sometimes described as the crown of creation, such a description is based on the superiority of human brain function and skills. Its sophisticated structure and how vital centres are created deep in the skull, to be protected from traumas, make you marvel. Also, the brain controls the different functions of the whole body, with its sensory and motor activities, various vital system functions including the lungs and the heart, all endocrine glands’ function, in addition to various receptors and centres that allow utmost precision and accuracy in everything we do. An example of this kind of precision is a doctor feeling a vein or an artery with the tip of a finger to insert a needle or a musician moving a finger a few millimetres while playing a violin, to produce the exact sound needed. Furthermore, the integrated function of human muscles, nerves and spinal cord is also amazing, let alone the synapsis between the nerve endings and muscle bundles, the chemicals secreted in them which allow electric stimulus transmission from the nervous system to achieve the motor function and desired movement.

The human brain also has the unique feature of storing knowledge. Of course, we should not ignore the importance of the training and programming ability of human brain. We learn how to drive a car, how to play games, how to study, how to operate safely on a sick patient. Such acquired skills are quite limited in other members of the animal kingdom. Moreover, the human brain has the unique ability to invent, discover, improve and correct errors it identifies.

Another very unique feature of human brain is its ability to conduct speech, a feature of humans that is under-developed in other members of the animal kingdom. While most animals can make noise and sounds, only humans can articulate words, sentences and even sing very complex songs. This unique ability seems to be the underlying mechanism behind the development of languages which are based on the human ability to talk and transmit information and knowledge by words and phrases.

The unseen brain has allowed human life to develop over time, building skills and achievements from generation to generation. Millennia ago, humans lived in huts together with animals, and now they build houses and palaces to live in. Centuries ago, we used donkeys, horses and camels to travel but now we use cars, trains, ships and airplanes. Our ancestors burned wood and coal to cook and to warm but now we use electricity to do these.

When we look carefully at the unseen parts of the human body, we also realize that we cannot alter any of it, despite the scientific advances made over the years. We can understand what harms our body and take measures to avoid it. Out of the ability of our brain to discover and invent, we have now produced science-based means for curing various diseases. Consider how we can replace a dysfunctional heart valve or a mobility-limiting joint. These inventions have resulted in a better quality of life, alleviating of symptoms, even helping to avoid early death, in some cases such as heart disease and cancer.

The heart of the matter

Another unseen source of life in humans is the heart. This fist-size organ is so complex in its structure and function. Recent scientific advances have enabled us to study heart function in milliseconds, hence the development of pacemaker treatments. They have also allowed clear imaging of the inside of the heart and the identification of pathologies, developments that guide practitioners to the optimum treatment of heart conditions. Recent discoveries have also allowed us to better understand how people develop coronary artery disease and how the pathology starts at the innermost layer of the arteries, particularly in individuals carrying significant risks for atherosclerosis including, smoking, high blood pressure, diabetes, high cholesterol and obesity. Amazingly, obesity has been shown to be the strongest underlying cause of other risk factors, hypertension, diabetes and hypercholesterolemia. So, nature cannot be blamed in many of these patients but our own patterns of behaviour. Science has shown that walking at least 5,000 steps each day, complying with the design of our body, reduces the likelihood of developing coronary artery disease by 15 per cent.

The unseen physiology of the rest of our body systems and the interaction between systems make us wonder how we are made. A rise of our body temperature by one degree due to a bug infection affects all body systems from the brain to the heart. A virus which cannot be seen by the most powerful microscope can destroy our lungs and cause premature death, as was the case with COVID-19 and others.

Finally, human inventions in the form of powerful microscopes have allowed scientists to study the human cell, which is the smallest living component of our body. Such small cells cannot be replicated in any factory in the twenty-first century, despite the vast scientific developments that surround us. You'll be surprised to learn how complicated and meticulously fine-tuned a human cell is and also how it functions, connects with other cells and other parts of the body. An example of this is the interaction between body minerals, calcium, sodium and potassium with heart and muscle individual cells. Such a function is critically controlled by many factors such as time, electric stimulation and pressure differences producing remarkably harmonious contractions and relaxation of the muscles without missing a beat.

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24 June 2025

7 min read

What my film about the prodigal son really means

Our relentless focus on productivity devalues the things that make us human

Emily Downe

Emily is designer and animator at the Theos think tank.

In Sync with the Sun.

Theos.

Watch now

In his 2021 book 4,000 weeks: Time Management for Mortals, Oliver Burkeman observes that an obsession with productivity doesn’t give us more control over our lives, ‘instead, life accelerates, and everyone grows more impatient. It’s somehow vastly more aggravating to wait two minutes for the microwave than two hours for the oven - or ten seconds for a slow-loading web page versus three days to receive the same information by post.’

With technologies like artificial intelligence rapidly accelerating our lives, this constant demand to squeeze more into our time is not only limited to the mundane tasks that we have to do and wish we didn’t. It seeps into what we want to do and indeed must do in order to flourish: creating art, spending time in community, and caring for others. The problem is that these things cannot be measured in productivity metrics because they inherently do not function in that way. How do you measure how ‘productive’ a conversation is? Or a work of art? Artists such as Vincent Van Gogh or Emily Dickinson didn’t see their influence in their own lifetime.

The more we measure our lives in productivity metrics, the more we devalue the things that make us human, ultimately making our lives and the world around us increasingly artificial. This is the basis of my recent film, In Sync with the Sun, which is a short animation about the rhythms of activity and rest that are written into our world, and what happens when an obsession with productivity takes over.

I wrote the initial script for the film after a period of burnout. I was fully in the “make the most of every second” mindset, which left me feeling exhausted and confused about where my value resides. In response, I began researching the sleep-cycles of various animals and I was liberated by surprising details such as the fact that lions, which we see as mighty and majestic animals, sleep for around 21 hours a day. Even creatures like jellyfish, which don’t even have brains as far as we know, still have cycles of rest. Every living thing thrives in these rhythms of activity and rest, even down to plants and minuscule organisms. Our whole world is built on this pattern, in sync with the sun. Yet for us humans, our rhythms have been broken by technology, leaving us confused about our limitations and what we should do with our short lives.

The film begins in nature, deep in the jungle where some leopards are sleeping. But the tranquility is abruptly interrupted by the voice-over declaring, “the war against sleep began when artificial broke into the night.” Brilliant white light breaks up the deep blues and purples on screen, until the screen is filled with blinding white. I wanted it to feel like that moment you peer at your phone in the middle of the night - the pain of your pupils trying to adjust. If you think about it, for 99.9 per cent of human history, our eyes would have never had to do that - until now.

Artificial light wasn’t powerful enough to change that. Instead, it’s given us an unquenchable guilt about how we use our time.

With his invention of the light bulb, Thomas Edison was determined to banish the night, and the limitations it enforced on us. Edison was known for being fiercely obsessed with productivity and, as a result, was an anti-sleep warrior who believed,

“There is really no reason why men should go to bed at all.”

As someone living a century on, I find it baffling to imagine that humans should eradicate sleep entirely. Perhaps because just 100 years later we are seeing the results that sleep-loss and over-working can have on our physical health and wellbeing. Maybe we cannot supersede nature after all, since we are an embedded part of it. It seems that “Sabbath" rest is written into our world and into our humanity. Artificial light wasn’t powerful enough to change that. Instead, it’s given us an unquenchable guilt about how we use our time. Now we decide when the day ends, so whoever can rest the least wins.

The battle is still raging; incandescent bulbs only set aflame that root desire to be increasingly productive. The hamster wheel is spinning uncontrollably, and we must keep up. So, what do we do? The attempt to remove the limitations outside of us has revealed that they are in fact inside of us too. Therefore, the only way to keep up is to remove the human from the hamster wheel altogether. The failure of artificial light leads to the birth of artificial minds.

As a creative, this is what frustrates me most about artificial intelligence; that it is mostly being driven by this quest to bring everything under the reign of productivity. It goes without saying that this is greatly needed in some areas of society. Just like artificial light, it can and will do a lot of good in the world. However, when the obsession with productivity is prioritised over human flourishing, that’s when we know there is a big problem with how we view our lives.

Thinking back to the examples of Van Gogh and Emily Dickinson; what is lost when we don’t allow space for artists, carers, mothers, or any skilled role that requires an element of patience? For me personally, I can’t force creative inspiration, instead it comes at me, often at times when I’m not looking for it. Similarly, sometimes that inspiration leads directly to an instant idea, but most often it’s a vague idea I jot down to which later life experiences and opportunities then build onto, forming it into something bigger and more in-depth. This could be compared to a role or situation that requires relationship building. Sometimes there are moments of instant bonding and “productive” progress in relationships, but it’s often more complex where external experiences or changes, which are outside of our control, may unexpectedly deepen understanding between people after long periods of frustration.

In my animation, I used the metaphor of a butterfly to illustrate this sentiment. After the character realises he is not made for a life of relentless productivity, he steps out of the black and white skyscraper into the lush wilderness. A butterfly lands on his productivity badge and the voice over says, “You’re not a machine.” I imagine the Creator saying this to the loved creation. Creatures like butterflies seem completely unproductive to our human standards. They take weeks to form in the chrysalis and exist in the world for less time than that. Yet they are a source of wonder and beauty for anyone who has the privilege of seeing one up close. A reminder that nature is not in a rush. Where AI is concerned, however, speed and profit are the focus of desire. But looking at the world around us - that we are a part of - it’s clear that not everything can or should be valued by these limiting metrics alone.

The overarching narrative of In Sync with the Sun is loosely inspired by the biblical story of the prodigal son. The main character has travelled far away from his home in pursuit of success, and he eventually realises that this master does not love him. At the end he comes home again, finding connection in community and in the good rhythm of productivity and rest that he came from. I wanted the film to address the issues that an unhealthy obsession with productivity can cause, and instead evoke a desire to accept and live more in sync with the boundaries and rhythms that are embedded in the natural world we are a part of.

The film ends with the line, “The only thing that can stay awake is not awake at all.” In the midst of the changing world of AI, humans might be tempted to measure our productivity levels in comparison to these machines. However, technologies always raise the productivity bar higher and higher, and one day we need to accept that we simply aren’t going to be able to reach it. We don’t sit apart from nature like technology does, so let’s stop resenting that, and instead celebrate it. To quote Oliver Burkeman again,

“the more you confront the facts of finitude instead - and work with them, rather than against them - the more productive, meaningful and joyful life becomes.”

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