OSes designed in the 70s aren't and weren't necessarily bad. It just depends on the circumstances. When they were written they fit the times quite well. But thi

OSes designed in the 70s aren't and weren't necessarily bad. It just depends on the circumstances. When they were written they fit the times quite well. But things have changed since then. Lisps have also changed since it was first created. Unlike many languages lisp has evolved tremendously over the years and has benefited from a tons of language research. The lisps we have today are much more than we had in the 60s.