Comment by brabel

Exactly, this thread is full of ignorant comments. I was talking about a certain class of race conditions that can be completely prevented in some languages, like Rust (through its aliasing rules that just make it impossible to mutate things from different threads simultaneously, among other things) and languages like Pony, for example, as the language uses the Actor model for concurrency, which means it has no locks at all (it doesn't need them), though I mentioned Dart because Dart Isolates look a lot like Actors (they are single-threaded but can send messages and receive messages from other "actors", similarly to JS workers).