Which one would you rather have an arm that regenerates every week or legs that grows back in every week? 
human
If you can only have one, what would you want?  Which sounds better to you? 
assistant
none 
human
Can you explain?  Which one?
assistant
Which one would you rather have an arm that regenerates every week or legs that grows back in every week? 
human
If you can only have one, what would you want?  Which sounds better to you? 
assistant
none 
human
What do you mean by that?
assistant