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On the other hand, I hadn't heard of the Cray twins before. Each day we learn something new.

That's partly because they're the Kray twins, though I had never heard of them before, either. [0]

[0] https://en.wikipedia.org/wiki/Kray_twins

The Tom Hardy movie Legend is about the Kray twins (he plays both), and is well worth watching if you haven't seen it.

I have not! Seems to be on HBO, currently. I'll check it out.

https://www.xkcd.com/1053/

I wasn't making fun of him. I genuinely thought he was joking.

Can you explain why this concept is difficult for you to believe?

Because this is Hacker News and there's so few superstar supercomputer architects (Seymour Cray, Steve Chen, Daniel Hillis) that it should be possible to recite their life stories off the top of one's head.

I've never heard of Steve Chen or Daniel Hills and I've been involved for about 15 years.

It's absurd to expect everyone here to hold the same knowledge of the world as you.