We like to think that the universe is consistent, but do we really have any evidence for this assumption? On the contrary, we seem to have evidence for the contrary.
Case in point: Where is my coffee substitute? It’s not in the cupboard, and I know we have some — a brand new can of it. I could conjecture that my tenant downstairs stole it in a fit of covetousness, but given that the first time he tried any, he took one sip and said, “Why do you do this to yourself?” I think the more likely solution is that it simply winked out of existence.
Now, I might conjecture that it’s floating someplace in a hypothetical dimension, in a sea of unmatched socks. But why invoke a new universe? I suspect that it has relocated to another location in the present universe.
That said, if anyone opens their kitchen cupboard and finds a jar of coffee substitute that you are certain you are not responsible for, don’t blame your spouse. Please advise me, and we can make arrangements to have it shipped back to me in a more Newtonian manner.