I'm active in the vintage personal computing space, and I find it funny when this topic crops up every decade or so under a different name. In the 1980s, there

I'm active in the vintage personal computing space, and I find it funny when this topic crops up every decade or so under a different name. In the 1980s, there was a entire software category of "personal knowledge management systems" where each product claimed it had the best system. "Second brain" is no different; it's a group of concepts that may or may not work for you, but as these comments show, they certainly don't work for everyone.