I can imagine a full build of the project(s) in TFA are on the order of several minutes to build/run the first, and maybe every time. I remember working on projects before SSDs were common that would take on the order of a half hour or more... the layers of abstraction were so that you literally had to thread through 15+ projects in two different solutions in order to add a single parameter for a query and it would take a couple weeks to develop and test.

That said, I did catch up on my RSS feeds during that job.