Gabriele Carcassi on The Correspondence Between Quantum and Classical Mechanics

See Classical mechanics as the high-entropy limit of quantum mechanics by Gabriele Carcassi, Manuele Landini and Christine A. Aidala.

29:34 The hard thing seems to be finding people who are in a position to pay attention to your ideas. You would think that AI could help, but it seems to the people who make and use the AI don't actually know how to make it useful in that way. See Alison Gopnik - The Evolution of Human Intelligences and Old Guys Talking About Software - Chris Lattner and Jeremy Howard.

See also E.T. Jaynes' comment about Bohr's omelette in Chris Fuchs' talk "Some Tenets of QBism".

Feliz Día de Muertos.

Here he is calling for a better idea than tensors to describe physical spaces:

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Maybe you have to start with a better idea of what a Matrix is, ...


57:00 If you want to understand some system you need to understand how it is viewed from the perspective of all the other systems. But some systems are skeletal! A skeletal category is one where all the objects are distinct (none are isomorphic to any other unless the two are equal). In the category of Matrices the objects are the natural numbers. See this post https://math.stackexchange.com/q/2798216 about the category Vect of k-vector spaces, where the objects are vector spaces and the morphisms are linear maps: The basis theorem, which is equivalent to the axiom of choice, states that every vector space is a free vector space.

 
Everything is a vector, including the natural numbers and units:
 

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