Thu Mar 9, 2023
Towards a Neo-Classical Account of Probability
At the heart of the ‘classical’ approach to probability is the idea that the probability of a proposition quantifies the proportion of possible worlds in which it is true. This idea has a proud history, but it has fallen on hard times. I aim to rejuvenate it: I show how the laws of physics might yield well-defined sizes for sets of physically possible worlds, and argue that these sizes are apt to play the credence-guiding and frequency-explaining roles of probability.