Exceptions in threads is a valid objection, but designs have gotten a lot better. They now usually get automatically re-thrown whenever you access the result of

Exceptions in threads is a valid objection, but designs have gotten a lot better. They now usually get automatically re-thrown whenever you access the result of futures. But that seem barely any different than return based error handling to me. If i don't access the result of some thread, I'd probably also forget to check its err.