There's a spectrum between being able to give a lecture without preparation at a moment's notice, and having to look up how every single time. I have to re-lea

There's a spectrum between being able to give a lecture without preparation at a moment's notice, and having to look up how every single time. I have to re-learn CSS every two years, since I might not do front-end development for a year. But I'm pretty happy to do so, because the best way sometimes changes. I never get very good.