Second, the danger warnings were set to flash way into the future, for the year 2050 or 2100, dates well beyond decision-makers’ life spans. Most voters have more urgent concerns, especially at a time of disruptive change. Third, the link between action and result has been too diffuse to register. Or, cause and effect relate to different people: The farmer who burns his crop stubble in Punjab cares not a whit for the poisonous air breathed in Delhi — just one example of how the polluter does not pay. And fourth, technological fixes like more fuel-efficient engines are no solution because, perversely, they encourage more consumption.