# 1. Seven or eight years ago, when we enter a Bank for any transaction, we have to stand before a particular counter where our account is managed. Normally in the beginning of a month all the counters would be crowded. If and when the counter clerk accepts our pro-offered passbook+cheque (for withdrawal of cash - there were no ATMs those days), he would give us a metal (brass?) token. As there will be more than one counter, the tokens will not be in serial order. We may get token No 217, next man would get 62! The passbook+cheque will be passing hands, from this desk to that, finally to the Branch Accountant who will "approve" the transaction, and pass it on to the cashier for payment. As there will be more than one cashier to disburse the cash, our passbook will land on any of these cashiers randomly; and he would call out the token numbers again randomly. Thus, there are very good chances that we may be delayed for hours!! Now, as you enter the Bank, you press a button a...