Well, we kind-of define work as being that done by humans. My laptop does more number-crunching than all the human computers of last century every morning, but

Well, we kind-of define work as being that done by humans. My laptop does more number-crunching than all the human computers of last century every morning, but we don't count this as work taken away from anyone. Humans find new things to do, providing services (or amusements) to each other which were not previously thought necessary. The entire services sector of the economy is things that basically weren't done 100 years ago (or were done on such a tiny scale as not to matter). And we all work hard to afford these new things, by making other such new things (like websites!), partly as a game of keeping up with the neighbors, rather than being content with our great-grandparents' living standards.