There are many scientists, philosophers, who've talked about this concept of a multiverse,

but this is a very strict, very sober understanding of what a multiverse is.

All of these universes in this multiverse obey the same laws of physics.

We're not talking about universes where there are other laws of physics.

This should be no more surprising than historically when it used to be thought

to be the universe consisted of our planet and around our planet,

orbit it everything else.

Other planets, stars, the sun, the moon, orbit it around us.

It exists on this tiny planet.

Then our vision of reality got expanded a little bit.

We realized, in fact, we were not at the center of the universe.

The sun was at the center, and these other planets were, in fact, bigger,

in some cases, in the case of Jupiter and Saturn and the gas giants,

bigger than what our planet Earth is.

The sun was a lot bigger than what we are, so our universe became larger.

Then we realized that we were just one star system among many

and a huge galaxy of hundreds of billions of stars.

Then later we realized that this galaxy is one of hundreds of billions of galaxies.

The history of ideas and the history of science is a history of us

broadening our vision of exactly how large physical reality is.

This is another step in that general trend.

We should expect it to continue.

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