If Scheme is so good why MIT drops it?

[Nobody]

On Wed, 22 Jul 2009 15:17:52 -0700, Carl Banks wrote:

> So do all these OSes have some kind of __mega_unifying_poll system
> call that works for anything that might possibly block, that you can
> exploit from a user process?

Threads ;)

They also have the advantage that one thread can run while another is
waiting on disk I/O, which isn't something which can be done with a
select/poll interface (even if select/poll worked for files, it doesn't
help for mapped files).