olemus
püüd probleemi lahendada korduvate varieeritud katsetega
Wiktionary:
the process of finding a solution to a problem by trying many possible solutions and learning from mistakes until success is attained

ülevaateid
https://en.wikipedia.org/wiki/Trial_and_error
https://www.dragdcbisauli.com/files/theoriesoflearning.pdf
https://orientalcollege.in/Dynamic_Img/cf5df887-ea32-4e96-9c28-4fe0f3347678.pdf
https://journals.oslomet.no/index.php/techneA/article/download/4391/3906/19099