Just thought you would like to know:
Although we cannot prove whether inflation went on for an infinite duration or not, there is a theorem that demonstrates that inflationary spacetimes cannot be extrapolated back for arbitrary amounts of time; they have no beginning if so, and are called past-timelike-incomplete. Inflation may give us an enormously huge number of Universes that reside within a greater multiverse, but there simply aren’t enough of them to create an alternate, parallel you. The number of possible outcomes simply increases too fast for even an inflationary Universe to contain them all.
In all the multiverse, there is likely only one you. You must make this Universe count, as there is no alternate version of you. Take the dream job. Stand up for yourself. Navigate through the difficulties with no regrets, and go all-out every day of your life. There is no other Universe where this version of you exists, and no future awaiting you other than the one you live into reality. Make it count. Ethan Siegel, “Could Parallel Universes Be Physically Real?” at Forbes
But wait! There might be an infinity of multiverses in which you are not unique. This is the only one in which your head has not exploded.
See also: Hope springs eternal: Are new particles hiding “in plain sight?” The Large Hadron Collider just keeps confirming the Standard Model, almost as if there was some basis for believing it to be correct. Rob Sheldon thinks the current mood is desperation: If you don’t know where you are going, you will certainly arrive. Information is finite, ignorance infinite.
What does it mean to say, in physics, that something like the Higgs boson “exists”? Sabine Hossenfelder: Realism is a philosophy. It’s a belief system, and science does not tell you whether it is correct.
Ethan Siegel tackles fine tuning at Forbes
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