Why is Python popular, while Lisp and Scheme aren't?

[David Eppstein]

In article <3DDA7385.2020609 at nyc.rr.com>,
 Kenny Tilton <ktilton at nyc.rr.com> wrote:

> > There are two things which make me cringe.  1) When a Pythonista
> > complains about allergies to strange delimiters, and 2) when a Lisper
> > calls other languages too slow.
> 
> The numbers I hear are that CL runs on average 20% slower than C.

This is after how many decades of Lisp compiler development?

-- 
David Eppstein       UC Irvine Dept. of Information & Computer Science
eppstein at ics.uci.edu http://www.ics.uci.edu/~eppstein/