"BROOKLYN" QUANTUM SWAPS AND COUNTERSWAPS

This week we'll be exploring Wojciech Zurek's concept of envariance (entanglement assisted invariance) and run through his argument for how one can derive Born's rule for probabilities from a quantum version of Laplace's principle of indifference. We'll try and decide whether it's convincing or not. Along the way, we'll meet some illuminating string diagrams, learn to calculate the Schmidt decomposition, and engage in some fine graining and splitting of hairs.