Before I left my first job, I made a document called "Koen's brain dump" where I would document anything that only I knew. Years later I heard from my ex-colle

Before I left my first job, I made a document called "Koen's brain dump" where I would document anything that only I knew. Years later I heard from my ex-colleagues that they not only used my brain dump, but were still extending it. Seems like I was getting smarter without me ever realizing it ;).