axiom of equality
we are everything we‘re not. if x=x and x is what defines someone and makes them the person they are and y is what they dislike and hate, it‘s still something that defines this person
so x=x=y
for example, if i would dislike blueberrie, that would make me someone who hates blueberries, which would be part of me and my personality
for another example, imagine a picture of you in a certain surrounding like a forest. you are the main subject in the picture and the forest is in the background. you are x and the forest would be y. you are certainly not the forest but if there wouldn‘t be any forest or any background what would define the line between you and the background, there isn‘t a certain border. so the forest still defines you somehow.
i‘ve come to the conclusion that mathematics are just a metaphor for things others rather describe in words. variables are metaphors, as the human has always deeply felt a need to describe his environment.
and in the example of schroedinger‘s cat, it isn‘t really about the cat being dead or not, but rather about the paradoxon of life and x being y at the same time.