“One could think of the interventions like a fire extinguisher,” he wrote. “It will be effective if the fire is caught early (say only a grease fire on the top of a stove). But once the fire has spread and half the house is ablaze, you can empty the fire extinguisher, but it won’t do much (probably as effective as just throwing it through a window). The problem with implementing (the social interventions) too late is you get all the downsides and little benefit, so speed is critical. The challenge is that they need to be implemented before things get bad.” By the time people realized that
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