Summer over in a flash, autumn wind and rain outside – perhaps cosy evenings will speed up both my reading and review-posting.

I just finished AI Snake Oil by Arvind Narayanan and Sayash Kapoor, having long been a fan of the blog of the same name. The book is a really useful guide through the current hype. It distinguishes 3 kinds of AI: generative, predictive and content moderation AI – an interesting categorisation.

On the generative AI so much in the air since ChatGPT was launched in late 2022, and the persuasive debunking here is of the idea that we are anywhere close to ‘general’ machine intelligence, and of the notion that such models pose existential risks. The authors are far more concerned with the risks associated with the use of predictive AI in decision-making. These chapters provide an overview of the dangers: from data bias to model fragility or overfitting to the broad observation that social phenomena are fundamentally more complicated than any model can predict. As Professor Kevin Fong said in his evidence to the Covid inquiry last week, “There is more to know than you can count.” An important message in these times of excessive belief in the power of data.

The section on the challenges of content moderation were particularly interesting to me, as I’ve not thought much about it. The book argues that content moderation AI is no silver bullet to tackle the harms related to social media – in the authors’ view it is impossible to remove human judgement about context and appropriateness. They would like social media companies to spend far more on humans and on setting up redress mechanisms for when the automated moderation makes the wrong call: people currently have no recourse. They also point out that social media is set up with an internal AI conflict: content moderation algorithms are moderating the content the platform’s recommendation algorithms are recommending. The latter have the upper hand because it doesn’t involve delicate judgements about content, only tracking the behaviour of platform users to amplify popular posts.

There have been a lot of new books about AI this year, and I’ve read many good ones. AI Snake Oil joins the stack: it’s well-informed, clear and persuasive – the cool breeze of knowledge and good sense are a good antidote to anybody inclined to believe the hyped claims and fears.

My colleague Neil Lawrence’s new book, The Atomic Human: Understanding Ourselves in the Age of AI, is a terrific account of why ‘artificial intelligence’ is fundamentally different from embodied human intelligence – which makes it on the one hand an optimistic perspective, but on the other leads him to end with an alarming warning, that the potential of pervasive machine intelligence, “could be as damaging to our cultural ecosystem as our actions have been to the natural ecosystem.” The influence of AI on human society could be parallel to our adverse influence on the environment – no matter how good the intentions – because just as nature moves at the pace of evolutionary time so the interface between humans and nature has failed to take account of the damage humans cause, so the computer-human interface is characterised by this mismatch in information-processing speeds.

The book does not offer a handy list of actions to prevent the damage AI might do to us, but ends by warning about two things: the immense concentration of power in its development and use; and the use of automated decision-making in contexts where any judgement is essential – which is many contexts where uncertainty enters the picture. I rather fear those horses have bolted, though.

Most of the book is a fascinating account of both types of intelligence, AI and human cognition, using information theory as well as cognitive science to explain the profound differences. As he notes, “Shannon defined information as being separated from its context,” but humans need contextual understanding to communicate. Neil uses stories to provide context, to make what could be rather dry material more engaging, braiding the same examples (many from wartime: Bletchley Park, his grandfather’s D-Day experience alongside General Patton’s, the development of radar, missile testing…) through the text. Sometimes I found these confusing, but I have a very literal mind.

There have been lots of books about AI out this year, and I’ve generally enjoyed the ones I’ve read – although whatever you do, avoid Ray Kurzweil’s. I’d recommend adding this one to the to-read list, as it offers a fresh perspective on AI from a super-expert and super-thoughtful practitioner.