People ask lazy questions everywhere because it's easier than doing the thinking first. You see it at the doctor, the mechanic, even texting a friend for advice without saying what actually happened. The fix is the same every time: know what you're really asking before you open your mouth.

Cat walked on the keyboard is brutal but honestly kind of fair, and the fact that you needed 20 minutes to decode your own tmpA two weeks later is the real lesson here. Naming stuff a and b works great right up until the moment future you opens the file and has zero clue what b was supposed to be. My rule these days is simple: if I have to stop and think about what a name means, it is a bad name. Half the "extra typing" is really just saving yourself from a headache later, so it pays for itself fast. Keep saying the name in your head before you type it, that trick works better than people admit.