The article says: "You can almost always use a simple locked data-structure for synchronization fairly painlessly (and with a bit of practice, you can usually w

The article says: "You can almost always use a simple locked data-structure for synchronization fairly painlessly (and with a bit of practice, you can usually write one fairly painlessly, too)." If we focus on the first part, in my experience it is wrong: you can't rely on the data structure to do synchronization for you, because these structures only guarantee that internally they will work consistently, not that using them you can forget about synchronization and threading. Quite often you need to do your own synchronization on top of them, and it is easy to miss some cases. That's what my examples are about.