Lose a limb? Lose a heart and consciousness? What's the difference?
That's why we have two pilots in the cockpit, right?
Move along, nothing to see here.
It's not a valid point.
Because, of course we can lose control by natural problems (heart attack etc)
BUT is it a reason to
ADD problems or to add unkowns X or Y in the equation ? (by accepting artificial prothesis )
the difference between these 2 is:
1) we don't have choice, we are human being
2) it is just about rules and medical conditions. We do have the choice to avoid...