Recent content by javisot

I reconstruct the sentence then: "the feeling I get is as if we took BM and changed everything written in English to Spanish, and then said that the result is a new interpretation..."

The feeling I get is as if we took Copenhagen and changed everything written in English to Spanish, and then said that the result is a new interpretation.... What do you mean by interpretation? (Many Worlds and Copenhagen, while describing the same thing, are based on remarkably different...

Perhaps the term "formalized" wasn't the most appropriate. I'm not comfortable claiming that the idea of eternal inflation implies a level 2 multiverse and that this is theoretically proven. Some authors say yes, and others say no; there's no consensus. It's true that those who say yes often...

For example, a reference from one of the greatest physicists, https://arxiv.org/abs/1707.07702 (S.W. Hawking) "Based on this we conjecture that the exit from eternal inflation does not produce an infinite fractal-like multiverse, but is finite and reasonably smooth."

No, the fact that inflation fits the pattern doesn't mean it's experimentally confirmed. To confirm it experimentally, we would need other types of tests, for example, detecting B-modes in the polarization of the CMB

The idea that hasn't been formalized is that if you have an infinite universe with eternal inflation, you "necessarily" have a level 2 multiverse. That "necessarily" isn't clear. The idea of bubble universes is on par with conformal cyclic cosmology, in that there's no specific formulation and...

Strictly speaking, this is not proven theoretically, much less experimentally.

Personally, I think the OP's question is answered by referencing Tegmark's Level 2 multiverse. On the other hand, Peter's point is appropriate, since the "bubble universe" proposal is far less formalized than it seems.

I agree that all of this is theoretical and possibly has no relation to reality, and that the informal proposal of bubble universes might not even be theoretically true. What is the hierarchy of sizes? Multiverse-universe > bubble universe > observable universe I understand that the...

"A Level II multiverse, defined by Max Tegmark, consists of distinct, distant "bubble" universes formed through chaotic eternal inflation, where space expands forever. " (google)

The two points mentioned by Jaime and Ibix are very important. The expansion of the universe is a property of spacetime itself (it's not a receding "edge of the universe"), and it's crucial to understand the difference between the universe and the observable universe. To add a third point, the...

It should also be noted that, in practice, offering a switch is a provocation. Far more people than usual, when offered a switch, think, "If they're offering me a switch, it must mean something". They accept the switch without needing to understand the probabilistic framework. It's a difficult...

True, I didn't see the simplified version Ibix proposed. Simply using the three cards is enough.

You simply need three glasses, a stone, and a contestant. 1- Hide the stone in one of the three glasses. 2- Tell the contestant to choose a glass. 3- Instead of revealing whether that glass contains the stones, uncover one of the glasses they didn't choose that doesn't contain the stone...

True, Barandes doesn't give his opinion in this clip, he simply shows how the situation is.