“Three” seems to be a good number, that shows up a lot. Arithmetic is functions with “3” cardinality (operator, data, data). Three levels seems good: a solid f

“Three” seems to be a good number, that shows up a lot. Arithmetic is functions with “3” cardinality (operator, data, data). Three levels seems good: a solid foundation of high-quality library code; working application code on top of that; dirty workarounds on top of that. As you say, the problem comes when you stack workarounds on top of workarounds.