I'm writing an essay on Everettian MWI and its incompatibility with Born Rule probabilities. I understand the concept I'm explaining quite well (I think) but I fear without direct reference to the math behind the idea I will not a) convey my point as effectively as possible and b) understand the problem at hand fully.
My understanding: Everettian MWI can not be compatible with the Born Rule because each vector has a a P<1 probability of occurring YET at each interaction multiple universes (one for each vector in the superposition) are created with 100% probability. This is especially evident in the case of Schrodingers Cat if there you are in a world where there was no decay after 1 hour the probability that it decays in the next hour is exponentially higher yet once again the worlds will split evenly one in which the state decayed (and cat dead) occurs and the other in which non-decay (cat alive occurs) all possibilites occur with 100% probability.
What I'm missing:
(pages 11 & 12 in the linked article)
But I can't for the life of me really figure out what it's saying as I have no background in physics or math. If someone would be so kind as to breakdown the equations it would be appreciated.