Who Knew Screws and Bolts Could be so Interesting and Controversial too

I was a little bored so I looked into different screwheads and why there are so many? This was originally going to be about Phillips, Pozidriv and JIS but it has expanded way more. I just could not find anything that described nuts, bolts and screws and the differences.
Again all I found was Americanisms and I would imagine you all know what I think about that?
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Courtesy of the 4JX1 - decompile / learning project page and my son Rob, I was told about an eBay store that is helping support our community. The original post was from Jimmy Steel.
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[@stevezap1747]

As I turn 60 I realize that videos like this are a *lot* more interesting to me than they once were. Informative! Entertaining! Thanks for sharing.

[@katywalker8322]

Looking it seems that the first JIS standard for cross head screws was in 1958 (although revised a few times since).

[@pkgoldopalhunting]

good history