Article
Culture
Psychology
Weirdness
5 min read

Why smell jumps the queue when it comes to memories

Smells hardwire deep into the brain, writes Henna Cundill, as she explores why they jump-start such vivid memories.
An autumnal scene of a church yard and church framed by leafless trees.
'The smell of dust and damp stone will always cry “safety!”'
Jakub Pabis on Unsplash.

When I was a 22-year-old undergraduate my mother died quite suddenly. I can't remember the name of the undertakers we used, nor the chaplain who took her funeral. I can no longer visualise what any of their faces looked like. I know I visited the chaplain’s house to plan the funeral, but I can't remember exactly where that house was. What sticks is that the day of the funeral was a sultry summer's day, and both the chaplain and the undertakers smelt of perspiration. To this day there are moments where I catch that same whiff of man-sweat in some other location, and for a fleeting second, I am a bewildered 22-year-old once more. 

Here is another memory. I attended a tiny, rural Church of England primary school in the middle of England. At the end of each school year, all of us donned our little Wellington boots, which smelt faintly of slurry (since this was dairy-farming country) and sweaty feet. Then we lined up in a crocodile and trudged through the bluebell-wood (damp leaves) and skirted the edge of fields (silage, which stings the nose) covering the mile or so between our school building and the village church. 

We would enter the church grounds through the back field, hurrying through an eerily muffled graveyard with tombstones towering far above our heads and the grass disturbingly lumpy beneath our little feet. To the chidings of “Quickly!” and “Quietly!” we children scurried down a gravel path, away from this unsettling place of death, to reach the cool sanctuary of a little church, and the comforting smells (for me, at least) of damp stone and dusty hymnbooks. 

Others may not have the same associations, but for me the smell of dust and damp stone will always cry “safety!” and the reassurance that “there are no ghosts in here!” in contrast to that troubling graveyard. From death to life. Yet, at the same time, getting stuck with my nose close to some man’s whiffy armpit on the Tube will forever insinuate that I am just a child pretending to be a grown-up, out of my depth, overwhelmed with one thousand decisions to make (“What flowers do you want for her coffin?”) and no-one to advise. In the midst of life, death again.  

On reflection I will know that my emotions are being manipulated by my nose, in ways which are more or less than helpful depending on the circumstances.

Of course, I am not 22 years old and lost anymore, no matter what that man’s armpit tries to tell me. My rational mind knows better, but my rational mind doesn’t get a say – or doesn’t get the first say anyway. This is because smell is the only one of our senses that bypasses the thalamus (the brain’s ‘filtering gate’ that decides which part of the brain needs to respond to sensory input) and goes straight to the limbic system, where emotional memory is stored.  

Sometimes it is very obvious that this is taking place, such as in the examples given above. On reflection I will know that my emotions are being manipulated by my nose, in ways which are more or less than helpful depending on the circumstances. But it can happen in more subtle ways too. Supermarkets infamously pump out smells to influence our buying choices, and we’re trying to sell our house right now, so we’ve been brewing a whole lot more coffee than we ever usually would.   

Intriguingly, scientists don’t really know why the human sense of smell jumps the queue when it comes to cognitive processing. There are biological theories, such as that the smell of predator could wake up our ancestors while they were sleeping and/or could allow them to follow a scent trail quickly when fleeing danger or seeking food. There are social theories too, such as that we don’t have a lot of good words to describe smells, so the brain just doesn’t bother trying to analyse them. Whatever the truth of the matter, the reality is that (whether we like it or not) our noses are an emotional trip-hazard.  

When I walk through those great oak doors there is a moment, a glitch in the matrix, when the unmistakable smell of church hits my nose. Dust, damp… a little hint of mouse. 

I can’t help wondering what this tells me about my religious practice. Do I go to church because I have made a cognitive decision to worship God each Sunday? Or do I go to church because I am following my nose, getting away from a world full of armpits and responsibilities to a place where I am a seven-year-old girl, all gingham dress and wellies, feeling safe. If so, does it matter?    

Truth is, my mind can give me a dozen reasons not to go to church every single week. In fact, two dozen reasons. More. It has always been a busy week; I’m always behind on work. The house always needs a sort out and the car is never washed. But because certain congregation members are normally counting on me for certain things, and because I’m still pretending to be a grown up, I typically drag myself out the door, and off to church I go.  

And week on week, without fail, when I walk through those great oak doors there is a moment, a glitch in the matrix, when the unmistakable smell of church hits my nose. Dust, damp… a little hint of mouse. My body registers this before my mind; my shoulders drop a little of their tension. Even if it’s just for a fleeting moment, I start to feel that I know for sure what is absolutely real in my life and what is just pretend.  

Is this knowledge irrational – since it doesn’t come from the cognitive part of my mind? Or is there a God who knows that the cognitive part of my mind sometimes tells me all sorts of untrue and unhelpful things. Is there a God who is choosing to reach out to me in more subtle, more ancient ways?  

I can only wonder if I have been following my nose all this time, without even noticing. Drawn along by an ancient scent trail that leads me time and time again…this way…and that way…until I reach a place where there is safety, and bread. 

Explainer
AI - Artificial Intelligence
Culture
Digital
7 min read

Challenging transhumanism’s quest to optimise our future

Instead of separating the human from the hardware, Oliver Dürr recommends rediscovering other ways of self-formation and improvement.

Oliver Dürr is a theologian who explores the impact of technology on humanity and the contours of a hopeful vision for the future. He is an author, speaker, podcaster and features in several documentary films.

A plastic sheet strewn with biology-related instruments.
A biohacking kit for a biology workshop.
Xavier Coadic, CC BY-SA 4.0, via Wikimedia Commons

Welcome to the age of transhumanism. In this world, the goal is to overcome all limitations and restrictions that hold human beings back. Science, technology, and medicine should allow us to live longer, healthier, and better lives. So runs the promise. But is there a peril that goes along with it? To answer that question, we need to take a closer look at the phenomenon of transhumanism, particularly the view of human beings that lies behind the glittery promises of an “optimised” future.  

Improving humans, however possible 

Transhumanism is a global movement that seeks to use all available technological means to “enhance” human beings. From curing illnesses and overcoming physical limitations to expanding mental abilities, the movement aims to overcome all obstacles to the current human condition. 

More precisely, it seeks to overcome all obstacles to the individual’s freedom to live the life he or she wants to live. In the attempt to enhance life, transhumanism veers beyond traditional forms of curing impairments (like compensating for bad sight with a pair of glasses) and ventures into more experimental fields (like manipulating the human eye to see ultraviolet or infrared light). Emotional or cognitive deficits (such as lack of concentration) are supposed to be overcome by “smart drugs” (like Methylphenidate / Ritalin) and even genetic modifications, and prostheses are considered to expand human capabilities.  

The goal is to create “superhuman” abilities. The holy grail of this movement is drastically extending the human lifespan (if it is in a state of health and vigour). Ultimately, transhumanists want to “overcome” death.  

There are two paths within the transhumanist movement on which they hope to arrive at this sacred goal: a biological and a post-biological way.  

Biological transhumanism 

Let’s have a look at “biological transhumanism” first: The focus here is on our current, carbon and water-based bodies. Weak and fragile as they are, biological transhumanists must make do with them to achieve the greater things they envision. Human beings must be treated with drugs, and a host of prefixed technologies: bio-, gene-, and nano-. 

Aubrey de Grey’s project of postponing death by achieving a “longevity escape velocity” is a good illustration of the movement. De Grey is convinced that novel biomedical technologies can achieve a limitless extension of the human life span: “If we can make rejuvenation therapies work well enough to give us time to make them work better,” he writes, “that will give us additional time to make them work better still” and so on. The time gained with a particular innovation must only be greater than the time needed to achieve another such advancement. Therefore, he argues, the effective death of people alive today can be staved off indefinitely.  

De Grey is not alone in transhumanist circles to predict such outcomes. Google’s Ray Kurzweil has a similar view: “We have the means right now to live long enough to live forever”.  

Such optimistic prognoses bank on a view of human beings as being essentially a body-machine that can be controlled and improved at will. The key to unlocking its potential is information theory.  

Think of human beings as an algorithm, and, in principle, all their problems can be solved by engineering. Cultural critic Evgeny Morozov poignantly called this approach “technological solutionism”. From a ‘solutionist’ perspective, humanity is increasingly seen as the problem that needs solving. Thus, not only must we develop new technologies to guarantee human life and freedom, but humanity needs to adapt. Those necessary “transformations” of the “human” are what inform the first dimension of the term “trans-humanism”. 

If human beings want a seat at the table in the digital future, they must find a way to merge with and dissolve into the digital sphere—or so the transhumanist narrative goes. 

Post-biological transhumanism 

The second path is “post-biological transhumanism”, which takes a more radical approach. Here, the focus is on leaving behind our current bodily form altogether and radically transcending the limitations of what it means to be human today. Those alterations, such transhumanists argue, will be so radical that calling the result “human” will no longer be adequate. The preferred means to achieve the future state are taken from the digital sphere: algorithms and information processes.  

The view of “the human as a machine” becomes more specifically “the human as a computer”. Mind, spirit and consciousness are understood to be the software within the hardware of the body. Human beings are perceived to be biological computers and thus in direct competition with digital computers. And those are becoming increasingly powerful by the hour. If human beings want a seat at the table in the digital future, they must find a way to merge with and dissolve into the digital sphere—or so the transhumanist narrative goes.  

Immortality in the Cloud? 

For post-biological transhumanists, the ultimate goal is called “mind-uploading”. The idea is that we can upload our minds (selves) to the internet and achieve immortality—at least if all we are is the sum of information processes in the brain and as long as the internet infrastructure is still available. Mind uploading requires leaving behind our current biological form of life altogether and dissolving into virtuality.  

This vision of virtual immortality is why post-biological transhumanists tend to place their hopes in information technologies, software algorithms, robotics and artificial intelligence research. They aim to overcome and entirely leave behind the “human” as it is. This move to “transcend” informs the second dimension of the term “trans-humanism”. 

In classical humanism, at least from the Renaissance to the 1970s, “human improvement” meant education, moral, intellectual, and practical formation and refinement towards a concrete ideal of humanity and the shaping of a society that enables such formative processes. 

Is there a solution? 

But can those transhumanistic approaches really deliver on their promises? 

Human beings have always tried to improve themselves—not least through technology. What is new today is how transhumanists define “better” and some means of realising those perceived benefits. With its solutionist approach to life, transhumanism discards large swaths of traditional techniques to “improve” human beings and their lives. In classical humanism, at least from the Renaissance to the 1970s, “human improvement” meant education, moral, intellectual, and practical formation and refinement towards a concrete ideal of humanity and the shaping of a society that enables such formative processes.  

But in the age of transhumanism, there is a tendency to believe that we can delegate such hard work of the self to a new technocracy and their algorithmic tools—who, to put it mildly, may not always have our best interests at heart.  

Freedom is best conceived, not as a mere “choice” to do what we please, but the liberty to live a truly fulfilling life, which almost always includes others .

The main problem, however, is that ultimately, we cannot delegate our future to machines because, after all, we aren’t machines. Instead, we must learn to live with ourselves, our limitations, and our finitude, or we will never be free. Freedom only ever begins once we learn to let go of ourselves and start living for and with others.  

The reason for this is that freedom is best conceived, not as a mere “choice” to do what we please, but the liberty to live a truly fulfilling life, which almost always includes others. Many of the things that make a future worth wanting in the first place are shared goods, relational, communitarian, cultural values and practices that needn’t be optimised or automated at all—at least not technologically.  

When building a sandcastle with my toddlers, that process needn’t be optimised (which realistically would mean excluding the toddlers from the process altogether). Rather, the process of doing it together is the point. Political decision-making processes, to take another example, also don’t have to be automated or made more efficient through algorithms. Struggle in deliberating how our society should look is the point. Without such moral deliberation, our public life is diminished. In many cases, the slowness, strenuousness and inefficiency of such processes is a feature, not a bug.  

A tech future beyond transhumanism 

Having this in mind changes the questions we pose in light of novel technologies: How (if at all) can they be integrated into our lives in such a way that they open up the world in its complexity, allowing us to experience the fullness of life and enabling us to shape the future we really want? 

It is time to rediscover and bring back religious and humanistic traditions of self-formation into our public debates about the future. Far from being relics of the past, soon to be discarded, they can provide us with tried and true values, practices and virtues around which we can organise our societies in the digital future. They provide us with the tools to unlock the sources of care and the will to create a better social framework in which human beings and technology find their place. The future need not be transhuman to be better; being fully human is quite enough.