Elon Musk’s ambitious Neuralink project to link human brains with machines is part of the entrepreneur's crusade to “stop the AI apocalypse”.

Musk has been vocal with his concerns about AI, famously saying we’re “summoning the devil” with its development. The SpaceX and Tesla founder created OpenAI in part due to concerns that AI could pose an existential risk if developed carelessly.

In February last year, Musk left OpenAI over disagreements with the...