While I completely agree with that in general, the opportunity for practicing it is unfortunately seldom a reality. I mean you need to be in a situation where

While I completely agree with that in general, the opportunity for practicing it is unfortunately seldom a reality. I mean you need to be in a situation where - You're designing a new product, or relatively large / independent new feature of a product. - You also have a decent amount of time to think about it, maybe experiment with some performance characteristics, and not be under pressure from "management" (or whoever else) to have a "working" demo version quickly so they can actually show and sell it to people. Sure it happens sometimes, and it's great, but I would argue for most programmers this isn't their daily reality.