random [cogito] notes

Isn't the PNC obvious? Unless you don't believe in the reality of time and change, how could one argue that two opposing predicates are part of the same subject at the same time? I'm sure there are some arguments about quantum states that disprove this, but in my estimation, while quantum states are real, their explanation in terms of traditional thought about the state of a photon. I don't know how to flesh this out, but something troubles me about having to prove a concept that seems relatively logical from the get-go.