Should we be glad? Elon Musk’s company Neuralink says it has given a human a brain implant for the first time.
Dawn of the cyborg as Musk puts chip in brain
Splashing cash: As the world's second richest person, Musk has put £79m into the project. Glossary
Elon Musk - A South African-born entrepreneur whose companies have included the online payment service PayPal. He now controls Twitter, renamed 'X'.
Microchip - A very small piece of material containing electric circuits that hold lots of information.
Paralysed - Unable to move.