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I am pretty skeptical that humans simply holed up in caves until this was all over, as the article suggests.

In fact I'm skeptical UV would be a big problem for humans at all. Aside from holing up in our houses and offices most of the day, we wear clothes.

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And yet, so many get skin cancer when a big chunk of the population is vitamin D deficient through lack of exposure to the sun.

Survival just means we live long enough to reproduce. Humanity would be fine, have a child the die of skin cancer in everyone’s late 20s, life would just suck for any individual human though.

It could be that our alphabet was the key to scale.

On a side note is it a coincidence Golang has exactly 27 first class functions?

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