I use it for everything. I made a deck called "Life" and use it to memorize things like my SSN, phone number, friends' birthdays, which subway exit to take to get to Y location, etc.
What do you do for a living? I'm sure it could supplement your knowledge in whatever field it is.
This is the public group instrumental rationality diary for the week of September 3rd. It's a place to record and chat about it if you have done, or are actively doing, things like:
Or anything else interesting which you want to share, so that other people can think about it, and perhaps be inspired to take action themselves. Try to include enough details so that everyone can use each other's experiences to learn about what tends to work out, and what doesn't tend to work out.
Thanks to everyone who contributes!
Previous diary; archive of prior diaries.