by The gist of the book “getting things done” is to free up your minds processor by writing down things you want to remember in a place you can depend on. With your thoughts safely captured, you can allow your mind to focus better on the rest. 2nd brain codifies it into a process complete with paid seminars. The difference seems to be tagging and metadata, with the idea that we can use a computer to help with those. The overarchign issue is organization and that seems to be a fundamental issue with all the systems from DayTimer on up, creating and keeping an order so that information is retrievable.
https://www.keepproductive.com/blog/how-to-build-a-second-brain
