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Here’s a choose-your-own-adventure game nobody wants to play: you’re a United States judge tasked with chief bail for a black man, a first-time offender, accused of a non-violent crime. An algorithm just told you there’s a 100 percent chance he’ll re-offend. With no added context, what do you do?

Most scientists accept the rate at which the moon and Earth have been bombarded by meteorites has remained connected for the past two to three billion years. Understanding the age of craters on the moon can help us better accept the age of our own planet because the Earth would have accustomed agnate numbers of impacts.