You even admitted you know very little about the "technical aspects" of bitcoin. The "technical" aspects is exactly what bitcoin is so I am unsure what exactly is left behind to understand?
If you educated yourself before making this topic you would not have made it. How can you talk about something you do little research in? You don't make sense.
Physical? In a digital world? Do you want to go backwards? Why not just use fiat then? The point of bitcoin is that is is digital.

Btw this is why it won't work. Bill are printed by the government and each bill is unique and has various methods to prove it is real. A bitcoin bill is printed by anyone with a printer. How can you pay someone with something you just printed out? I could hand you a piece of paper with the QE code to a game on the android market and just tell you it has $100 on it to pay for my purchase? How will you know how much is on it? There is no way to verify it. Why not just display a QR one your phone and let the other person scan that directly?