This effect is called hypergamy and it's always been around. Tinder and the likes just exaggerate it. It's sort of like increasing wealth inequality but for men's dating. There's been genetic studies which show that most women that have lived procreated, while during some periods most men did not. Upside is that if you belong to the top 5% of attractive men this is the best time to be alive :)

If I'm not mistaken the Spanish flue actually mutated to become more lethal.

Most probably the high blood pressure had already caused the changes that lead to the stroke. If it was going to happen the time of highest physical stress was the most probable. You can make the same argument against exercise, but then it sounds even more false. Everything is a trade-off.

"win key + space" lets you change the input method on windows

I have done that hundreds of times. I have not done it deliberately even once. It's like playing that U2 album on my phone.

I think it was the first article I've read on the issue that actually explained all the factors in a clear way. As it's a complicated issue it needed to be long. Even though the pilots evidently were incompetent, I do think he's too light on his criticism against Boeing. The failure mode on this system was too drastic, and unnecessarily persistent. Combined with the fact that all that was needed was one faulty sensor this was obviously shoddy engineering.