Definitions get you into that time trap, and I'm very much more process-focused. Take Lucy, for example. Lucy is famous largely because she has almost a total skeleton. The more sophisticated we get with instruments, the more we can find out. Through CT scans of her skeleton, they now think she died falling out of a tree because of the way her bones are broken. If nineteenth and twentieth century technologies can retroactively transform our bodiment, what then do the technologies we now use do?