I am going to become the computer science person who can fix your computer

It's a common meme among programmers: "Oh, you studied computer science? Can you fix my computer?" 

Computer Science consists of one (1) day in which they teach you about how a computer works, usually the first day of Intro to CS, and it's generally very hand-wavey and done with poorly drawn whiteboard illustrations. 

"Oh, this is what the CPU does. No, I won't show you a picture of it"

Then, later you take Computer Systems, which teaches you how to write C and Assembly, and something about "pulse width modulation". The weak drop out of the major like flies. The strong persist, and still have no idea how to fix your computer. 

Actually, the weak who drop out of the major often switch to IT, but still can't fix your computer because college IT usually only has you take Security+ for some reason. 

IT gets all the fun toys, too. Do you think CS ever got to play with Google Cardboard? Not a chance. We had to prove the pumping lemma. I never figured out what they were talking about, but lemmings are pretty cool animals. And as part of my big CS review, I will understand that stuff, even if I didn't the first time I saw it. 

But I am studying IT at the same time, on my own. I just want to know my machine and be a whiz from both the software side and the hardware side. I've built my own computer -- now I want to be able to upgrade it, fix yours, and program them all. That doesn't mean I am going to reply on time to your tech support requests when I am swamped, though, because I'm a bad texter. I don't want to be, but I am. 

It just means that I will know how. Incompetence is a deep-seated fear of mine. I want to know that I am able.