“When the Dalai Lama was a child, studying the doctrines of Tibetan Buddhism, his teachers explained that the moon emits its own light. But one day they brought him a telescope. He looked at the moon under magnification and saw that its surface contained shadows. He had made a discovery: The moon’s light comes from elsewhere. It must come from the sun. The doctrine was directly at odds with what he could perceive with his own senses and a scientific instrument. What to do? Simple: Change the doctrine.”