The "he is criticizing it because he fears it for himself" theory is of course an oversimplification. But sometimes it is true. And even if it is not true, it i

The "he is criticizing it because he fears it for himself" theory is of course an oversimplification. But sometimes it is true. And even if it is not true, it is a great strategy to make someone stop with the criticing, which i used quite a few times when I got sick of homophobic jokes. And there is an other argument for doing it anyway, even though it looks much less important than curing illnesses or stuff like that: We live our lifes in a specific way. The way we live it, we generate expertise. I know nothing about illnesses or development work, I would have to start at zero. But I know how to build a computer together with the parts on the market, and I think I know how to select the best ones, so I can build a hardware recommender. Same thing for other people with foto sharing apps and so on. Working there where we have a clue is not arrogant and mindless, often times it is smart.