Or simple efficiency. Why spend hours figuring something complex out when the problem has already been solved a million times prior. That's essentially the basis of learning anything.

Sure, at some point it's nice to derive something from first principles to really understand it at a deeper level, but often times that's a complex process and it's aided by learning the thing by repetition prior to learning by how the thing was derived. That's how we learn math after all.

> Or simple efficiency. Why spend hours figuring something complex out when the problem has already been solved a million times prior.

I agree, at least when it comes to problems that don't fall into your core specialization. When you have a broken pipe, you don't spend several years studying plumbing, you just call a plumber. Similarly, when I have problem with LibreOffice, I don't start reading its source code, I go to Stack Overflow.