#Cats #Duvets #TheoreticalPhysics
A little #HistoryOfPhysics analogy: when antimatter was first suggested as a mathematical prediction (specifically the positron, a POSItive elecTRON) there was some discussion over whether it was a new particle, or just an *absence* of an electron in a field that was all electrons. A "hole" where an electron should be?
For example, is this an absence of a cat, or is it a negative cat?