Hi Cowboy,
No, I did not know that, but it does not surprise me at all. I read his By his Bootstraps(about time travel).
It is logical that many scifi writers have a solid technical background. The idea is, after all, to use a lot of sound science and technology to make the story's framework mostly 'normal' and only use specific themes that are with current know-how impossible. If you stuff the storey with too many impossibilities then the theme would be lost.
One of the best I ever read is A.C. Clarke's Rendezvous. Virtually nothing impossible happened. The impact of the story was that whatever humans actually did was of no consequence at all on the universal scheme of things, like a single ant on an elephant.
Conrad
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