Natural selection is demonstrably not working. It only takes one look at a newspaper to see that thoughtlessness and stupidity are doing better than ever.

I think the internet is pretty great, but it's a major factor in that rise in at least 3 ways:

* Previously, an important check on fools was social consequences. Now they have an endless supply of people to bother. Spammers were the first to exploit that, but now it's endemic.

* Algorithmic weighting toward the reaction-generating (versus, say thoughtful, measured, responsible, accurate, helpful, kind) has rewarded idiocy and awfulness with attention and money. We're all now living in a reality TV show.

* As those behaviors become a major percentage of what people, especially young people, see, they become normalized. Otherwise people think being a thoughtless jackass is just how to get by in the world.

We are strongly in need of firm politeness, of militant decency. Without it, things will get "naturally" worse.