something else I wonder about

Is there really any money there?  I love online banking, I really do. It's so convenient to sit here in my pajamas and transfer funds from savings to checking (it seldom goes the other way) or to schedule a payment on a credit card or utility bill but sometimes I wonder if there is really any actual money behind it all? I mean I know there's a little bit somewhere. I can, after all, do a quick drive through at an ATM machine and get actual cash out. But all these numbers that flit back and forth via wifi, mine and everyone else's, I just imagine numbers being passed back and forth endlessly without ever touching actual money.  I guess it really doesn't matter when you thin k about it.  After all, paper bills and coins are also just tokens of value that is supposed to be out there somewhere. Maybe I need to take a trip to Fort Knox to reassure myself.