The heuristics or invent art or science of discovery or methods or techniques for this purpose have Greek etymology. It comes from the verb heurisko (preterite perfect heureka), find, find, find out after a search, also invent or imagine. The heureka or sudden resolution of a problem seemingly impossible to resolve before effect is usually explained by the adoption of a broader approach. Sometimes it is better to look at things with a certain distance.
* Only one "like" per meaning and day, the more "likes" the meaning will appear higher in the list