TL;DR: Matt Wayne (the interviewee) talks about a basic problem that agile was supposed to solve: creating software that actually satisfies business requirement

TL;DR: Matt Wayne (the interviewee) talks about a basic problem that agile was supposed to solve: creating software that actually satisfies business requirements. For him, Cucumber and BDD solves this problem. But for all other bugs and code defects that happen during software development, mutation analysis works great at increasing the quality of unit tests: https://en.m.wikipedia.org/wiki/Mutation_testing https://en.m.wikipedia.org/wiki/Mutation_testing