looking around at all the painfully slow software I have to use Unsound fundamentals (when to use the right data structures, etc) surely do contribute to softw

looking around at all the painfully slow software I have to use Unsound fundamentals (when to use the right data structures, etc) surely do contribute to software bloat but I don't think it's anywhere near the largest contributor to that problem, not by a long shot. The overwhelming issue IMO is a lack of time allocated for developers to actually focus on perf. I've been doing this for years and I almost always need to fight+claw for that time, or just do it guerilla style when I'm really supposed to be doing something else. It certainly is true that lot of performance issues could surely be avoided in the first place if developers made better choices in the first place, choosing the correct data structures and so on, and stronger fundamentals (though not bit twiddling in particular) would definitely help with that. But in most projects I've worked on, requirements change so rapidly it's tough to bake perf in from the start even if you're willing and capable.