There is nothing worse than being the person who gets called in to fix the failing threaded code that was written by someone who sort of knows threading but not

There is nothing worse than being the person who gets called in to fix the failing threaded code that was written by someone who sort of knows threading but not really. I've been saying it for years, most people can not hold all the information they need together to write a complicated threaded system. It is hard and most people do not keep the level of concentration and focus required to use threads beyond trivial to simple use cases.