Indeed, and it points to why there are multiple languages, because features that eliminate one class of mistakes can make it harder to eliminate another class.

Indeed, and it points to why there are multiple languages, because features that eliminate one class of mistakes can make it harder to eliminate another class. For instance, a mistake might be a spelling error in an identifier, or it might be a program that does completely the wrong thing because it was too hard to read, or that does nothing because it took too long to write.