What do you mean in your experience? Summing integers can take two orders of magnitude more time and it doesn't matter? I think it goes without saying in discussions of performance, we narrow our focus to performance sensitive applications and not CRUD database web frontends. I can tell you in the vast majority of performance sensitive numerical applications, that would matter. It would have to be massively disk bound for it to be overshadowed completely by I/O. Just saying. :)
I don't follow. Why aren't database web front ends performance sensitive? They seem like one of the slowest things out there, and some of the most widely used. My comments here on Steve Souders' realization is basically what I'm talking about: https://news.ycombinator.com/item?id=13346635
If you want to make systems fast, you work on the bottleneck. I'm saying that people think too often that summing integers is the bottleneck, when it plainly isn't.
Although I have worked in the domain of numerical applications, thus my nod to Julia. Anybody who works in that domain isn't going to be using something like Pixie; it's too impoverished in terms of types and data representation.
