Sometimes You Do Need It vs. You Ain't Gonna Need It. I suppose he is arguing Einstein's make it as simple as possible but no simpler. I look at YAGNI as a fi

Sometimes You Do Need It vs. You Ain't Gonna Need It. I suppose he is arguing Einstein's make it as simple as possible but no simpler. I look at YAGNI as a filter not a hard and fast design principle. When starting a non trivial project, I sketch out the design and requirements. Then I apply YAGNI to eliminate the cruft and those features that are nice to have but would delay the first release.