a Russian government official, noted both as a homeopath and an inventor who was involved with an early version of information technology. While working in the statistics department of the Police Ministry, Korsakov became intrigued with the possibility of using machinery to "enhance natural intelligence". To this end, he devised several devices which he called "machines for the comparison of ideas". These included the "linear homeoscope with movable parts", the "linear homeoscope without movable parts", the "flat homeoscope", the "ideoscope", and the "simple comparator". The purpose of the devices was primarily to facilitate the search for information, stored in the form of punched cards or similar media (for example, wooden boards with perforations). Korsakov announced his new method in September 1832, and rather than seeking patents offered the machines for public use.
