Funny, I had a similar experience TAing “Intro to CS” (first semester C programming course). The student was certain he encountered a compiler bug (pushing back on my assumption there was something wrong with their code, since while compilers do have bugs, they are probably not in the code generation of a nested for loop). After spending a few minutes parsing their totally unindented code, the off-by-one error revealed itself
>>zehaev+kc
Offer topic, but the Codeless Code isn't Zen Koans. It's formatted like Zen Koans, and it's entertaining and brings value to the world, but it isn't the same thing.