I once made the mistake of working retail during Christmas rush.  I was working at a store that had 24 cash registers available to them and they had them all open.  This still didn’t stop a customer from coming up to me to complain that we should have more open than we did.  So let’s do the math, our total capacity was 24 registers and we had 24 cashiers working, so full capacity.  I’m not certain how this person expected us to increase our volume?  Must be nice to be delusional.