Short wroclove.rb 2022 lightning talk. Premise: the human brain is wired not to memorize but to solve problems; heavy tasks you did once (an API, a workflow) are nearly relearned years later. The speaker started blogging a couple of years ago and wishes he had started ten years earlier. The main audience isn't the world — it's your future self. Writing forces better understanding of what you implemented, and the speaker often comes back to his own blog to see how he did things. Core message: write for your future self; it will reward you.