The blog's example is stupid. Of course if you pop a list in more than one thread the behavior is undefined. Who on earth doesn't expect that? @jagw: ok fair

The blog's example is stupid. Of course if you pop a list in more than one thread the behavior is undefined. Who on earth doesn't expect that? @jagw: ok fair, but that is going to be the very first example of things thou shalt not do when using threads in any article, book, or course