What are the basic differences between SuperMemo 2, 5, 6 and 7?
The full record of upgrades introduced to SuperMemo is listed in the file DEVELOP.TXT. In short, all versions of SuperMemo allow the learner to substantially increase the speed of learning. Figuratively, if traditional methods of learning are viewed as a pedestrian, SuperMemo 2 Public Domain may be compared to a bicycle, SuperMemo 5 Shareware to a Trabant, and SuperMemo 6 to a Mercedes. Learning with SuperMemo 7 is as fast as with SuperMemo 6, but introduction of audiovisual features adds some extra quality to learning. Each version includes some improvements to the user’s interface, database management, fault tolerance, statistical analysis options, menu tree, keyboard shortcuts, parameter set, help, etc. Moreover, in SuperMemo versions above 5, the speed of learning may be regulated by the learner (in a trade-off with knowledge retention).
