This actually makes a lot of sense. A computer executing the code and a human maintaining it need to know different things. A human needs to knon what the code does on a high level (what the programmer intended), how it handles (or does not handle) edge cases, etc. A computer only needs to know how to run the code at a super low level. Without comments, it is impossible to know if code is doing the right thing, or what is expected from the caller.