Whether our reality is the only one is a question that has been entertained by philosophers and physicists for centuries. We will examine the history and science of a range of multiverse hypotheses from Plato to the Bubble Bath model of the Big Bang Theory and the Simulation Hypothesis. [Note: admission fee only applies to the version of this talk given in the universe in which the payment was made, additional fees may apply to those who want to attend the versions in alternate universes.]