And so you can come up with truth in the science, with science, with the natural world. So this is really different from the way that things were done before the 1600s. This is right around 1600. In the Middle Ages, in the Dark Ages, in the 1300s, 1400s, really truth is set by the Catholic Church. The Catholic Church determines that, for instance, we are a geocentric universe. Geo, geography of Earth, center of the universe. That Earth was the center of the universe and the sun revolved around Earth.