This story is the latest confirmation of a worldchanging trend that YC companies (and their ilk) should be thinking about a <i>lot.</i><p>Your Excel analogy is apt -- just as a tech investor or startup founder in 1990 needed to be aware of the revolutionary impact programs like Excel were having on the world of business, or one in 2010 needed to be aware of the ways software is eating the world, in 2015 they need to be in touch with the ways mechanization et al are on their way to changing everything.