The existential threat from AI – and from humans misusing it Letters

Regarding Jonathan Freedland's article about AI (The future of AI is chilling – humans have to act together to overcome this threat to civilisation, 26 May), isn't worrying about whether an AI is "sentient" rather like worrying whether a prosthetic limb is "alive"? There isn't even any evidence that "sentience" is a thing. More likely, like life, it is a bunch of distinct capabilities interacting, and "AI" (ie disembodied artificial intellect) is unlikely to reproduce more than a couple of those capabilities. That's because it is an attempt to reproduce the function of just a small part of the human brain: more particularly, of the evolutionarily new part. Our motivation to pursue self-interest comes from a billion years of evolution of the old brain, which AI is not based upon.