Re: Worst argument ever
> Each bill has a unique serial number which can be traced back to where you got it from, be that an ATM, or a bank teller, or a supermarket cash-back or whatever.
That doesn't work if I get my cash from change or cashback in the pub. A lot of that cash will have been placed in the till from tradesmen, who in turn will have got it from middle class customers who will have withdrawn it from an ATM in Waitrose.
Obviously I'll have to up my drinking a little bit if I want to finance the importation of a tonne of cocaine or a small war by this method.