What does it mean to be human? The answering of this existential puzzler has powered progression for millennia, but now, as nascent technologies fuse physical, digital and biological worlds, it has never been more complex, and critical, to define the age-old question. Alarmingly, we are hurtling inexorably towards the ‘singularity’ – a hypothetical point when artificial intelligence advances so much that humanity will be irreversibly disrupted. But, in fact, the migration from man to machine has already started […] “We can envision ever larger gaps in capability between enhanced humans and unenhanced humans,” adds Wood. “This will be like the difference between literate and illiterate humans, except that the difference will be orders of magnitude larger.