The composability of vi/vim is not only its power, but its weakness. It's like a non-redundant language in which (almost) everything can be validly interpreted

The composability of vi/vim is not only its power, but its weakness. It's like a non-redundant language in which (almost) everything can be validly interpreted leaving no room for error detection. In vim nearly everything can be interpreted as a command and executed (sometimes even without strong visual feedback to be noticed) which means a lot of rope for mistakes. And mistakes human do. And for (such imperfect) humans editors are.