Ash HN: Excavating Decision Archaeology

I was digging through a magic number in code that has lived in the code for quite some time & couldn't figure out why that specific value was chosen. Digged through docs, PRs, PRs' comments, talked/brainstormed with people but no result. After hours of searching, it was buried in commit message

Wait... WHAT??? From now on, should I start reading commit messages? Do you have such weird stories?