Decades ago, when intelligent machines and androids were found in science fiction rather than the real world, Milton Friedman, a champion of free-market capitalism, recommended a negative income tax to help the poor without undermining their incentive to work. He proposed a progressive consumption tax as a way to pay for it.
数十年前，当时智能机器和机器人还是科幻小说里的东西，自由市场理论的领军人物米尔顿·弗里德曼（Milton Friedman）就提出要引入负所得税，以便在不伤害穷人工作积极性的情况下对其施以援手，同时又提出征收累进消费税来补贴负所得税。