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You can also have the idea that there are one-way interactions between the normal-matter universe and the dark-matter universe. It isn't too difficult to formu
by logfromblammo 10y ago
You can also have the idea that there are one-way interactions between the normal-matter universe and the dark-matter universe.
It isn't too difficult to formulate a mathematical system where two subsets are completely identical when considered in isolation, but when interacting, one subset operates as if the other doesn't exist, while the other is easily perturbed by any values in the mirror subset. I'm not sure if you can do it without at least one dimensional basis unit that squares to zero, though.
Imagine, if you will, that there are dark-matter people. We have no evidence whatsoever that they exist, any they are constantly annoyed by all the real-matter people that wander between their dark-couches and dark-televisions, and the real-matter bicyclists that pedal through their dark-bedrooms at the worst possible times.
- pavel_lishin 10y agoWouldn't there be some sort of energy exchange for this to happen? Wouldn't we notice that there's an unexplained loss of energy whenever we do anything? Or did I just invent a crappy layman-author's explanation of where inertia comes from?
- logfromblammo 10y agoConservation of energy/mass is a rule for the known universe. If we knew all the rules for the dark part of the universe, we wouldn't even be having this discussion. Anyway, the way the math works out, it is impossible for a known-universe person to even measure the effects the known-universe has on the dark-universe. The numbers can't come back to the known-universe without an additional input from it, and they would be explainable with another hypothesis that did not include a dark-universe. It way be that all effects we observe to be random are actually perfectly predictable to a dark-universe observer.