alt Hacker NewsI'm in a similar boat. I end up re-learning the same things over and over again.
I found a solution recently. "Critical mass." If I just don't see something frequently enough, my brain keeps deleting it.
So, if there's a fact you have trouble remembering, try memorizing it 100 times in one day. That's "inefficient", as far as memory goes, but it'll do the trick! And I like solving problems once and then moving on.
(Anki, conversely, is designed for efficiency, which means it's designed to be as painful and unrewarding as possible, but that's a rant for another time... suffice it to say if you design your software so that I constantly want to stop using it, your efficiency drops to zero!)
I find my memory is very selective. I wanted to get in touch with a coworker from five years ago: I had to look up his name on linkedin. My wife texted me "Hotlips died" and with no effort I texted back, "Oh no, Loretta Swit or Sally Kellerman?" Mind you, I haven't watched MASH the TV show in forever, and I haven't seen MASH the movie since my parents took me when it first came out. I have zero reason to remember Loretta Swit, let alone Sally Kellerman, but my brain hangs onto that like it matters; but a guy I worked with for two years five years ago, that my brain will drop like it's radioactive.