"T. Kurt Bond" wrote:

> Hmmm.  Well, try telling the Erlang folks that super-lightweight
> user-level processes aren't useful.  Or the Gambit Scheme folks: their
> next release has lightweight threads built on call/cc.  (Note: these
> two things may be related.)

concerning lightweight threads and continuations, simon peyton-jones
and norman ramsey have a nice paper:

	http://www.cminusminus.org/abstracts/c--con.html

and then there's always mitch wand's classic "Continuation-Based Multiprocessing",
available from:

	http://www.ccs.neu.edu/home/wand/pubs.html

regarding the merits of using threads vs callback, i agree that
there are few working programmers who can be trusted with concurrency,
but well-designed multi-threaded programms tend to be easier to
understand. it comes down to education really. of course there are
also various performance trade-offs.


martin