The Unquestionable Consequences of Wave Theory

In the 19th century, people have been arguing about what light was like for a long time. Paul Dirac in 1920 at Cambridge suddenly made it clear how light could give a wave-like answer or a particle-like answer if you asked a particle-Like question. We don't make progress by chopping experience down to a size that fits into our current series. We have to allow the way the world is to modify our understanding of the world. And then the thing has a happy ending.