"Eliezer S. Yudkowsky" <sentience@pobox.com> writes:
> Depressing: If you try to regenerate neurons, you'll probably destroy
> the programming - there's almost certainly a reason why the immune
> system is deliberately refusing to repair neurons.
The trick is of course to make the change local. Which is of course one of those horrible medical implementation issues, but might be solvable. Because neurons are also reasonably good at reorganizing themselves, so while you might loose a bit of the original connectivity of the broken spinal cord you get something comparable. Much worse with the cortex, of course.
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