This is what i've come to experience myself. Often a solid grasp of the core fundamentals of your domain is more valuable that having a half-baked knowledge of various in-depth areas.

Like the old man said, (or didn't) , You can always google it from your exobrain.

I even recall Sherlock Holmes' character saying something to that effect; he says something about the human brain having finite usable storage capacity (with a low-enough access-time). I really liked reading that quote (confirmation bias. he he)