It's arguable that you would literally die and be replaced by a machine-puppet pretending to be you; see the short story about that I linked in another comment

It's arguable that you would literally die and be replaced by a machine-puppet pretending to be you; see the short story about that I linked in another comment in this thread exploring this topic: https://news.ycombinator.com/item?id=40407969 https://news.ycombinator.com/item?id=40407969 There is no technology I can see which would convince me that a mechanical replacement hand was my hand and my hand was not literally dead. Only Prof. Michael Levin's work of regrowing real limbs might do that - see https://www.popsci.com/body-electrician-whos-rewiring-bodies/ https://www.popsci.com/body-electrician-whos-rewiring-bodies... and he has given many video talks, I saw one of him presenting at Facebook about his work triggering regrowing of frog's legs, but there appear to be many more videos of him - TED and Lex Fridman interviews.