Do you ever feel stupid?

I have an assignment on AWS (Amazon Web Services). First of all, I have procrastinated on this work for like 4 hours. Second of all, I had no idea what this meant to begin with. It was only after research that I found out. Had to call one of my friends who is into tech to tell me more about it before I began the work.
Anyway, it got me asking myself, what exactly do I know? People have things they have specialized in. I on the other hand seem to have little knowledge about many many things. I feel utterly stupid and useless.