One of the things it has led me to do is assume that the everything else is correct and I must be doing something wrong. We do that with compilers, interpreters

One of the things it has led me to do is assume that the everything else is correct and I must be doing something wrong. We do that with compilers, interpreters, the OS, hardware, etc., too. It's usually a decent starting assumption, but it can lead to wasted hours when the problem really is outside of what you've done.