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Changing the Initial State in Physics
The speaker discusses the concept of changing the initial state in physics, highlighting that classical laws of physics allow for altering the initial conditions within the laws of nature. By working backwards using equations like Navier-Stokes, one can create an initial state that would result in specific weather conditions. The crux of the argument lies in transforming the traditional view of the laws of physics from initial value problems to a geometric perspective, where dynamics are defined by the invariant set's geometry. This shift allows for the consideration of counterfactual states that deviate from the invariant set, making them consistent with the laws of physics.