Solution: optimum spacing of repetitions.

Yeah, good news. Clever people have studied human memory for years. As far as I know, the first big step was done by Hermann Ebbinghaus, in 1885 he published the manuscript "Memory: A Contribution to Experimental Psychology" [psychclassics.yorku.ca/Ebbinghaus]. He observed how and when we forget and researched it futher and ... well, let's skip the boring details, the most important thing here is that we actually can, more or less, estimate the optimum time of next repetition! Pretty cool, isn't it?

The next milestone was achieved by Dr Piotr Wozniak. He developed an algorithm that estimates the next optimal repetition time of an item ("item" is a simple fact). He made wrote a great software package - SuperMemo [www.supermemo.com - I highly recomended visiting the site!], which is very similar to MemAid. (Well, MemAid uses some SuperMemo ideas - the main idea for such program - but MemAid uses totally different approach (ANN) in computing optimal intervals).

SuperMemo and MemAid help you manage your learning. By monitoring your learning progress, they ensure that you remember new things, but don't forget old existing things. Repetitions are suggested only when necessary, so it's very optimal...