> I'm skeptical of that statement. Some of the engineers at, say, Google, deal with code complexity and scaling every day. Most probably don't. I am an enginee

> I'm skeptical of that statement. Some of the engineers at, say, Google, deal with code complexity and scaling every day. Most probably don't. I am an engineer at Google, and basically all of the engineers I work with have to scale their software in least one dimension such that big-O complexity is a significant (and daily) concern. What I mean by "daily concern" is that the check-ins are happening on a daily basis would be noticeably inefficient if they used an O(n^2) algorithm instead of an O(n) algorithm, for example. > Certainly, most at the non-Googlish companies hardly ever deal with this. My main experience is Google and Amazon, so I couldn't say. I was meaning to talk mainly about Google/Amazon/Facebook/Twitter-like companies. I'm betting Palantir is also one such place.