Nice post.
I remember the "god old" days. Started with a ZX Spectrum, went to C64 and then Amiga.
C64 and Amiga demos was the shit. "Have you seen this, or heard that? One year the Amiga would have a demo. A year or two after the ppl making demos for C64 would manage to do the "impossible" and reproduce same demo. Great fun to see how it was possible to make the machine do more that is was "able" to.
It was a battle and the different programmers reputation was at stake.
Same things with game graphix "How can it be better than this", we used to say. I Guess we know now :-)
RE: Computer Demoscene : during the 80's/90's