We have one guy at work who has had so many parts replaced that I wonder, when he needs a physical, if he goes to a doctor or a garage....... the guy already is a cyborg.
I wonder at what point the artificial parts will perform so much better than the original human parts that folks will begin wanting to have perfectly good parts replace to enhance performance.
Already happening - one attorney I know had all his teeth pulled by dental specialists and replaced by implants. Wonder what the price tag on that was....