You don't really need deltas and epsilons in the long run. Unless they are very cheap to have, robots are going to replace them.
Unrelated, this does make me want to watch Gattaca[1] again :)
[1]http://www.imdb.com/title/tt0119177/
Unrelated, this does make me want to watch Gattaca[1] again :)
[1]http://www.imdb.com/title/tt0119177/