> Thanks for the straw man argument there.  Garbage collectors and _not_
> using threads both improve the safety of the language.
>   
This might depend on what kind of thread interface you are provided 
with. Of course it's never easy to work with non-determinism, but if I 
take jocaml for instance, which gives you a process (in the sense of 
pi-calculus) interface to threads, and it makes it probably rather safe 
actually, possibly stronger safety when dealing with multiple processes 
(or UI threads possibly) than doing things with low-level primitves like 
fork and such.