Earlier quoted context omitted.
>There's enough background noise in the open office that I keep headphones on most of the time while I'm at my desk. I still don't get how we as a species went "this is fine". The complete loss of audiovisual privacy is such an immense drain. I'll buy the "being close together works better" argument, but I still can't grasp how that offsets all the distractions in the modern office.
Because "we as a species" evolved to work in groups. Humans are not loners. We eat, work, recreate and live in groups. To ship any complex groundbreaking product, you have to collaborate closely with a big group. Only in the last few decades, and only a minority of Human population in that period, has there been so much emphasis on "privacy".
Many of the most complex (software) products in the world are open source: web browser engines like Blink and Gecko, operating systems like Linux and its various distributions, compilers like GCC and LLVM, nearly every programming language, etc. Nearly all of that work is done collaboratively within a group, but it is not done in physical proximity to the rest of the group. Which works fine!