Nice write-up. It's easy to fall into the trap of assuming that things are "thread-safe" when writing under the iron fist of a Global Interpreter Lock. Ruby t

Nice write-up. It's easy to fall into the trap of assuming that things are "thread-safe" when writing under the iron fist of a Global Interpreter Lock. Ruby threads seems to be a fairly narrow topic on which to base a book; I'll look forward to seeing what all the book covers.