It's our mistakes that make us human

What we learn distinguishes us from tech.

Silvianne Aspray

Silvianne Aspray is a theologian and postdoctoral fellow at the University of Cambridge.

A man staring at a laptop grimmaces and holds his hands to his head.

Francisco De Legarreta C. on Unsplash.

The distinction between technology and human beings has become blurry: AI seems to be able to listen, answer our questions, even respond to our feelings. It becomes increasingly easy to confuse machines with humans. In this situation, it is increasingly important to ask: What makes us human, in distinction from machines? There are many answers to this question, but for now I would like to focus on just one aspect of what I think is distinctively human: As human beings, we live and learn in time.

To be human means to be intrinsically temporal. We live in time and are oriented towards a future good. We are learning animals, and our learning is bound up with the taking of time. When we learn to know or to do something, we necessarily make mistakes, and we take practice. But keeping in view something we desire – a future good – we keep going.

Let’s take the example of language. We acquire language in community over time. Toddlers make all sorts of hilarious mistakes when they first try to talk, and it takes them a long time even to get single words right, let alone to try and form sentences. But they keep trying, and they eventually learn. The same goes with love: Knowing how to love our family or our neighbours near and far is not something we are good at instantly. It is not the sort of learning where you absorb a piece of information and then you ‘get’ it. No, we learn it over time, we imitate others, we practice and even when we have learned, in the abstract, what it is to be loving, we keep getting it wrong.

This, too, is part of what it means to be human: to make mistakes. Not the sort of mistakes machines make, when they classify some information wrongly, for instance, but the very human mistake of falling short of your own ideal. Of striving towards something you desire – happiness, in the broadest of terms – and yet falling short, in your actions, of that very goal. But there’s another very human thing right here: Human beings can also change. They – we – can have a change of heart, be transformed, and at some point in time, actually start to do the right thing – even against all the odds. Statistics of past behaviours, do not always correctly predict future outcomes. Part of being human means that we can be transformed.

Transformation sometimes comes suddenly, when an overwhelming, awe-inspiring experience changes somebody’s life as by a bolt of lightning. Much more commonly, though, such transformation takes time. Through taking up small practices, we can form new habits, gradually acquire virtue, and do the right thing more often than not. This is so human: We are anything but perfect. As Christians would say: We have a tendency to entangle ourselves in the mess of sin and guilt. But we also bear the image of the Holy One who made us, and by the grace and favour of that One, we are not forever stuck in the mess. We are redeemed: are given the strength to keep trying, despite the mistakes we make, and given the grace to acquire virtue and become better people over time. All of this to say that being human means to live in time, and to learn in time.

So, this is a real difference between human beings and machines: Human beings can, and do strive toward a future good.

Now compare this to the most complex of machines. We say that AI is able to “learn”. But what does it mean to learn, for AI? Machine learning is usually categorized into supervised learning, unsupervised and self-supervised learning. Supervised learning means that a model is trained for a specific task based on correctly labelled data. For instance, if a model is to predict whether a mammogram image contains a cancerous tumour, it is given many example images which are correctly classed as ‘contains cancer’ or ‘does not contain cancer’. That way, it is “taught” to recognise cancer in unlabelled mammograms. Unsupervised learning is different. Here, the system looks for patterns in the dataset it is given. It clusters and groups data without relying on predefined labels. Self-supervised learning uses both methods: Here, the system uses parts of the data itself as a kind of label – such as, for instance, predicting the upper half of an image from its lower half, or the next word in a given text. This is the predominant paradigm for how contemporary large-scale AI models “learn”.

In each case, AI’s learning is necessarily based on data sets. Learning happens with reference to pre-given data, and in that sense with reference to the past. It may look like such models can consider the future, and have future goals, but only insofar as they have picked up patterns in past data, which they use to predict future patterns – as if the future was nothing but a repetition of the past.

So this is a real difference between human beings and machines: Human beings can, and do strive toward a future good. Machines, by contrast, are always oriented towards the past of the data that was fed to them. Human beings are intrinsically temporal beings, whereas machines are defined by temporality only in a very limited sense: it takes time to upload data, and for the data to be processed, for instance. Time, for machines, is nothing but an extension of the past, whereas for human beings, it is an invitation to and the possibility for being transformed for the sake of a future good. We, human beings, are intrinsically temporal, living in time towards a future good – which machines do not.

In the face of new technologies we need a sharpened sense for the strange and awe-inspiring species that is the human race, and cultivate a new sense of wonder about humanity itself.

Article

Belief

Christmas culture

Creed

Wisdom

16 December 2024

5 min read

How to have a philosophically happy Christmas

Raise a glass to the invasion of history by the author of history.

Charles Foster

Professor Charles Foster is a Fellow of Exeter College, Oxford, and a member of the Oxford Law Faculty.

A fish eye lens view of a person standing silhouetted, looking up to a colourful night sky with the Milky Way across it

Greg Rakozy on Unsplash.

A few years ago, I had dinner with a well-known philosopher. Knowing that he is no friend of religion, and curious how he’d respond, I set about mocking the credulity of Christians and parroting the lines I’d so often heard: superstition degrades and obfuscates; let’s act and think like grown-ups, not craven children; we’re free to write our own rules, and we can write better rules than barbarous Levantine goat-herders; we’re brave enough to say that when we die we rot. And so on. The standard fare.

He looked at me over the top of his glass. ‘Have you never been taught’, he said acidly, ‘that if you destroy the premises of an argument, the argument collapses? The same is true of history.’

I’ve slowly learned that he was right.

‘What have the Romans ever done for us?’, asked John Cleese, as the leader of the People’s Front of Judea. He’s famously answered by his troops. The modern version of the question, which is just as embarrassing, is ‘What have the Christians ever done for us?’ The historian Tom Holland, not (as far as we know) himself a professed Christian, has made a good living by providing a long and meticulously documented list. I’m not going to review it here. My own personal list would include Chartres Cathedral, Paul’s tectonic notion that there is ‘neither Jew nor Greek, slave nor free, male nor female’ (and hence universal human dignity and suffrage), and Christmas.

The Christians say that Christmas is the commemoration of a historical fact: an invasion of history by the author of history; of creation by the creator.

This is too much for many to swallow. If that’s true for you, is it dishonest to celebrate Christmas?

A mathematician friend works on imaginary numbers. An imaginary number is a real number multiplied by the ‘imaginary unit’, i. i2 = -1, and so i = √-1. Think about it. It’s an impossibility. It’s absurd. Descartes talked about ‘imaginary numbers’ only to laugh at the idea. But they are enormously useful in real life. You are reading this on a phone or computer screen courtesy of imaginary numbers. Sometimes it’s worth suppressing, or at least muting, a contemptuous laugh. Tom Holland’s list, and mine, depend on theological and historical numbers that might (or might not) be imaginary. You don’t have to stop dubbing the numbers ‘imaginary’ – don’t stop having to call them ludicrous – to carry on reading your screen.

Christmas, for me, is a celebration not only of family, gluttony and intoxication, but of four facts (if the Christians are historically correct) and four principles which are generated by those facts - whether the facts are real or imaginary. The principles work, just as my computer screen does.

First: human agency is cosmically colossal. The invasion I mentioned above was invited (so preventing it from being rape) by a Palestinian Jewish girl. She could have said ‘No’, and so scuppered the whole project.

Second: Christmas drafts a completely new account of power. In the Christian story of Easter, all the powers of darkness are disarmed by one broken man dying on a piece of wood between dying criminals. It was a continuation of the story that began at Christmas: the birth, in a shitty stable, to a teenage mother accused of fornication, of a child soon to be a refugee, driven to another country to escape the murderous authorities. It’s all about the subversion of political and military power by the irresistible power of the powerless.

Third: the universe is surprising. Nobody predicted the invasion. Yes, I know the Christians say, with the confidence given by the retrospectocope, that there were hints in the Hebrew scriptures, but they weren’t seen at the time, and the most learned Jews today, even with the retrospectoscope, still don’t see them. Yes, I know that the ancient world was awash with tales of the impregnation of mortals by gods, and with virgin births (think of Dionysos, Attis, Romulus and Remus and many others). But they didn’t look remotely like this. Those tales were told to prop up conventional claims to power, not explode them. Bethlehem burst onto the blind side of history, injecting unforeseen possibility. The virgin conception smashed pre-conceptions. A new way of being had gestated. If that was possible, what wasn’t?

Fourth: The most revolutionary thing about Christmas, perhaps, is that it shows that mythos is real – part of the web and weave of reality.

After dinner at Magdalen College, Oxford, on 20 September 1931, J.R.R. Tolkien, C.S. Lewis and Hugo Dyson walked together along Addison’s Walk, part of Magdalen’s grounds. They were discussing the resurrection of Jesus. Lewis knew all about the ubiquitous tales of dying and rising gods. The Christian resurrection stories were no different, he said. They were poetically resonant, no doubt, but essentially ‘lies and therefore worthless, even though breathed through silver.’

‘No’, said Tolkien. ‘They are not lies,’ There was a sudden rush of wind in the still night. In Lewis’s rooms the conversation continued into the early hours. The stories were indeed myths, Tolkien contended, but true myths.

This conversation propelled Lewis finally into Christianity.

The Christmas story suggests that Tolkien was right (and those notoriously mystical quantum physicists – some of the most adept handlers of imaginary numbers, by the way - are right): there is no robust boundary between history and legend, between physics and metaphysics, between matter and spirit. This, in fact, is our working assumption, whether we’re explicitly religious or not. However icy our reductionism, we think that we matter, that there is more than matter, and that whatever that ‘more’ is, it is heavier and more enduring than matter, and matters more than matter. We love our children far more than reciprocal altruism or kin selection suggests we should. However sturdy our atheism we dab our eyes at the St Matthew Passion and put flowers on our parents’ graves.

It is reassuring to have a festival which enjoins us to lift our glasses and toast the way we live when we’re being the kind of people we urge our children, our friends and our politicians to be. It commands us to admit mystery to the dining table, and to celebrate being as mysterious as we know we are.

Christmas, authentically celebrated, is part of the foundation on which rest Chartres cathedral, freedom, suffrage, dignity and many things we innocently and dangerously take for granted. Like it or not, that foundation, as the austere philosopher observed, is the premise of the argument for the civilization that until recently succoured us before we replaced it with – well, with what?