Say that the local lottery system has decided to innovate. Lottery tickets can now be used as money. A ticket with a face value of $x can be used to buy $x worth of stuff at any checkout counter in the country. Or they can be held in digital form and transferred instantaneously across the lottery's new payments system to friends, the utility company, or the government tax department. With the payments infrastructure in place, will people actually use lottery tickets to pay their bills, transact with friends, or settle their taxes? Can lottery tickets become money-like? I'm skeptical. Here's my thinking. Say that Jane has just bought $10 worth of digital lottery tickets. At the same time she's chosen to leave $10 in her bank account (she likes the fact that they aren't risky). She spies a coffee stand and suddenly has an urge to buy a $2 coffee. When she arrives at the till, how will she decide to pay? With lottery tickets or deposits? By paying for the $2 coffee wit...