"More obvious" is precisely my point: the misindentation in your example jumps out at anyone familiar with the syntax. This is not an universal cure, and won't

"More obvious" is precisely my point: the misindentation in your example jumps out at anyone familiar with the syntax. This is not an universal cure, and won't help you with other types of semantic errors: nothing is going to help you if you try to avoid thinking and rely solely on your tools; that is the essence of cargo-cult programming. OTOH, this tool will help you avoid a common pitfall with potentially disastrous consequences. A high-visibility vest for coding, if you will: won't save you from slipping or your head from falling objects, but neither is its purpose. (Iterative bootstrapping is how we got from sharpened rocks to virtual machines, not by "meh, this minor improvement won't fix everything, so why bother.")