Eh, Ken Hayworth’s not handwaving when he talks about uploading—he’s actively working on the problem. My impression is that the tech you’d need for full repair (handwavy nanotech) is less plausible than the tech you’d need for uploading (slightly-less-handwavy slice/scan/run). Given that there are already active credible projects working on uploading c elegans, it seems more-likely (though probably less intuitive) than physical repair.
Eh, Ken Hayworth’s not handwaving when he talks about uploading—he’s actively working on the problem. My impression is that the tech you’d need for full repair (handwavy nanotech) is less plausible than the tech you’d need for uploading (slightly-less-handwavy slice/scan/run). Given that there are already active credible projects working on uploading c elegans, it seems more-likely (though probably less intuitive) than physical repair.