Your ability to reason is tied a lot closer to your sense of self and humanity than your ability to run. If Usain Bolt became parapeligic he'd still be human, i

Your ability to reason is tied a lot closer to your sense of self and humanity than your ability to run. If Usain Bolt became parapeligic he'd still be human, if Richard Stallman suffered brain death it'd be debatable whether he's still a person or a corpse being kept alive by machines.