firstname.lastname@example.org (Mike Haertel) writes:
> * LispM's were not multi-user...
> * LispM's were not secure...
> The LispM's also cost too much--especially for single-user machines!
The Lisp Machines had a hellacious learning curve. If you could
invest the months required to learn all their tricks, they provided a
software-development environment that has still not been surpassed.
But even some accomplished Lisp programmers never had time to get over
"the hump", and non-Lispers faced a really frightening barrier.
The documentation was designed for people who already knew the answer,
and Symbolics was remarkably unhelpful unless you wanted to spend a
week and a few thousand dollars for a training course.
(This may have become a little better toward the end, but by then it
Early MS-DOS was even worse, of course, but there was much less of it