AS the author says: writing up content you've learned to share with others is the best crucible for figuring out what you really know and don't know. I've found

AS the author says: writing up content you've learned to share with others is the best crucible for figuring out what you really know and don't know. I've found myself following rabbitholes while trying to explain something in a blog post, and pretty soon I either hit excellent examples or counterexamples.