"If you do the work in a loop, you only use one process. If you create new processes and have each process do a portion of the work, then you create new processes. I don't see where that gets confusing."

Ok, in original post was :

for x in x y z ; do perl -bla 'bla bla' ; done
[download]

I was talking about ;-)
Some times parallelization save times, other not, it is clear. Yes, we agree, I think ..
Regards,