Comment by kbit

I'd like to add that, when building an atom bomb, you are well aware of what you're doing - why you're still doing it is an entirely different topic (an interesting one which, in fact, falls right into the social sciences). Software engineers at facebook, on the other hand, are likely not aware of the full impact of their work. Their seemingly harmless and objective algorithms literally, although indirectly, cause deaths, and the engineers working on them should be aware of that.