I have used SuperMemo for the last nine years of my life to learn three languages, lots of scientific concepts I had long forgotten after leaving school, world

I have used SuperMemo for the last nine years of my life to learn three languages, lots of scientific concepts I had long forgotten after leaving school, world history, jokes and countless other information. Spaced repetition is one of the coolest modern inventions and one of the best uses of computers on the human mind that I know of. It totally rocks as long as you put in effort.