Programmers often discover solutions while explaining a problem to someone else, even to people with no programming knowledge. Describing the code, and comparing to what it actually does, exposes inconsistencies. Explaining a subject also forces the programmer to look at it from new perspectives and can provide a deeper understanding.
This has a name? I thought this was just how it works. It’s why we think out loud.
eta: thinking + speaking + hearing engages more of your brain. That’s obvious, right? More engagement == more connections?