olemus
metoodiline probleemilahenduse protsess, millega keeruline probleem jagatakse järk-järgult väiksemateks, paremini hallatavateks osadeks
= a methodical process of problem solving, where a complex problem is incrementally broken down into smaller, more manageable parts

ülevaateid
https://web.stanford.edu/class/cs106j/lectures/03-Stepwise-Refinement/03-Stepwise-Refinement.pdf

https://maryash.github.io/135/slides/5.7%20Stepwise%20Refinement.pdf

https://dl.acm.org/doi/pdf/10.1145/362575.362577

https://en.wikipedia.org/wiki/Refinement_(computing)