Oppenheimer, my father, and the bomb

One week after its release, Christopher Nolan's latest blockbuster has left Luke Bretherton pondering an un-resolved disagreement with his late father and the theology of Oppenheimer's creation.

Luke Bretherton

Luke Bretherton is a Professor of Moral and Political Theology and senior fellow of the Kenan Institute for Ethics at Duke University in Durham, North Carolina.

I went to see the film Oppenheimer on its opening night at my local, community run cinema in Acton in west London. It was packed. The event felt more like going to church than to the movies. The film itself is a biopic of scientist Robert J. Oppenheimer who was a pivotal figure in leading the development of nuclear weapons during World War II.

Reflecting on the film afterwards it brought to mind a difficult and never resolved argument with my late father. In the aftermath of watching the film, I realised I was still haunted by our dispute.

Our argument centred not on whether it was right to drop the bomb. Our argument was about whether it was Christian.

My father was 18 in 1945 when atomic bombs were detonated over the Japanese cities of Hiroshima and Nagasaki, killing over 200,000 souls. He was conscripted into the British Army that year and stationed in India. If the war had not ended, he would have been among those deployed to invade Japan.

Our argument was not just about whether it was right to drop the bomb. It was also about whether it was Christian. My father was an ardent believer who converted to Christianity in the 1950s. His Christian commitments deeply shaped every aspect of his life and work. I followed in his footsteps, and at the time of our argument I was doing a PhD in moral philosophy and theology. In part I was trying to make sense of what it meant to be a Christian in the aftermath of events like the Holocaust and the dropping of nuclear weapons over Hiroshima and Nagasaki, events in which it seemed Christian beliefs and practices played a key part. In the film, this is marked by the stark symbolism of Oppenheimer naming the first test of the prototype nuclear weapon “Trinity” – an often used and key way in which Christian name God.

I had been learning about just war theory when the argument with my father erupted. I was having dinner with my mum and dad at their house. To give a bit of context, my father and I had a long history of sometimes bitter arguments over political matters. These began in the 1980s when I was a teenager. He thought Mrs Thatcher a hero. I did not.

I was telling them about just war theory and its history in Christian thought and practice. As with most of our arguments, we stumbled into it. I made a throwaway remark about how, in the light of just war theory, nuclear weapons were immoral and that their use in 1945 was wrong. And yes, I was probably being pompous and annoying like all those possessed of a little new knowledge and a lot of self-righteous certitude and fervour.

My dad replied with anger that I did not know what I was talking about. Didn’t I realize that if the bombs hadn’t been dropped many more would have died, including him, which meant I would not exist. Something like this argument was used in the film and was often used by Oppenheimer to justify his own involvement in developing atomic weapons.

At the time, I replied with a procedural point that nuclear weapons do not distinguish between combatants and non-combatants, a key distinction in determining the morality or otherwise of targets in war. To use nuclear weapons is to deliberately intend the indiscriminate killing of the innocent. This constitutes murder and not, as the euphemism has it, unintended collateral damage. I added insult to injury by declaring that my dad’s argument was also deeply unchristian as it was a version of the ends justify the means. Was it ever right to do evil even if good might be the result? This upset my father still further. For him it was personal. It was existential. The bombs saved his life. The bombs made our life possible.

The meal, like the argument, did not end well. We had both upset my mother. She banned us from ever talking politics at the family dinner table again. It was a lifetime ban.

What dawned on me was that the question of whether it was moral to possess, let alone use, nuclear weapons was also an existential question for me.

Afterwards I thought more about our row. I replayed the script in my head, trying to think of what I should have said. In my immaturity, I never thought to consider how I should have said it.

What dawned on me was that the question of whether it was moral to possess, let alone use nuclear weapons was also an existential question for me. It was a question of what kind of existence warranted anyone possessing nuclear weapons. To use the language of the Cold War of which I was a child: was it better to be red than dead? Was it better to be invaded and taken over by Communists and see capitalism abolished and the British nation subordinated to a foreign power or to deter this possibility by possessing nuclear weapons, weapons that threatened to destroy all life on this planet? In other words, was my way of life really worth the threat of nuclear annihilation. Was any way of life or ideology or commitment or abstract principle worth that? I concluded that it was not and promptly joined the Campaign for Nuclear Disarmament (CND).

I have not attended a CND rally for many years. And what happened in 1945 is more complicated than I used to think. But I still disagree with my dad and think Oppenheimer was deeply misguided. And what happened after 1945 with the advent of the nuclear arms race is not complicated. The film portrays Oppenheimer as anticipating and trying to forestall the process of one-upmanship that developing the A-bomb and then the H-bomb set in motion. He was right to do what he could to stop the arms race, even though, as the film portrays, the authorities tried to silence and marginalize him for his efforts.

Today, if my father and I were able to have the argument again, I would approach it very differently. I hope I would be less pompous, annoying, and self-righteous. But mostly, I would be more theological. I would ask him whether he thought Jesus would drop a nuclear bomb to save a life, or whether Jesus’s own life, death, and resurrection pointed in a different direction. And then see where that conversation took us.

Article

AI - Artificial Intelligence

Comment

21 June 2024

4 min read

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.