David Wallace - Many Worlds of Quantum Theory

Quantum theory is very strange. No act is wholly sure. Everything works by probabilities, described by a wave function. But what is a wavefunction? One theory is that every possibility is in fact a real world of sorts. This is the Many Worlds interpretation of Hugh Everett and what it claims boggles the brain. You can't imagine how many worlds there would be.



David Wallace is a philosopher of physics at the Philosophy School of the University of Southern California, after twenty-two years at the University of Oxford as a student, researcher and faculty.


Closer to Truth presents the world’s greatest thinkers exploring humanity’s deepest questions. Discover fundamental issues of existence. Engage new and diverse ways of thinking. Appreciate intense debates. Share your own opinions. Seek your own answers.

[jennieohk]

Wallace is my all time favorite!!!
I have had SO many aha moments listening to David Wallace explaining a concept!!! I can read books hear lectures and pass tests but I swear a lot of my true understanding has come from a handful of brilliant scientists on YouTube...lol

[corridourthoughts]

The physics milestone is when it really explains what made collection of atoms to study themselves.

[crackcrazy]

Me watching in another parallel world is gonna smoke weed after this

[anujbeatles]

Literally just finished watching DEVS and this is kind of surreal to see being uploaded just now

[powertothepeople]

Got to love this science, makes me feel smaller than a grain of sand.

[Bill..N]

Loved the interview! Many worlds is.a beautiful theory that eliminates all of the problems manifested by The Copenhagen interpretation.. No more backwards causation, to name just one..Thanks Robert..

[허유선-ym]

The number is stupid. We are in all possibilities and probabilities. The past is a dream and the future is another probability and possibility. Many worlds interpretation is very fascinating.

[Niaaal]

We need to humble ourselves to the concept that the foundational elements of physics are beyond our human brain and physical capacity to figure out. We can do our best trying though, and godspeed to all scientists. But defending theories with confidence can be misleading at best

[johnxantoro]

There really is only one relevant question regarding "many worlds": Can it be tested? If not, then it can only remain speculation.

[eric]

Schrodinger was taking the p*ss with his cat story.

[earthculture]

Many worlds theory is exactly the same idea the Neville Goddard talked about that all possible outcomes exist in the One Mind.

[irfanmehmud]

If superposition principle says a particle can be both at A and B at the same time, should not then it be a two-world interpretation theory?

[continentalgin]

There are very bizarre social implications that physicists never talk about, if anything possible to happen actually does happen in a parallel world.

[blacked]

How can a universe which had nothing create things by using Quantum Physics??

[kratomseeker]

i can not get this thought out of my mind. if you have 3 dimensions well you need 2 and 1 first and whatever your theory is we have to believe that the first dimention is everywhere and mybae that explains how quantum entanglement can be so fast and the speed of light ( i know entanglement is faster then the speed of light) and why light goes through things etc. maybe it is the 1st dimention and the bases for everything.

[AOk-bypi]

Why does nobody question the fact that it’s only ever humans that are discussed to live many worlds? Why not dogs, birds, trees, microbes, that affect the many worlds too? seems so egocentric to believe only humans are the differential of the many worlds. Multiverse and dimensions exist simultaneously just as the atoms and cells in our bodies, not created or destroyed, but always changing. All in all is all we are.

[eyebee-sea]

Lets say the probability of outcome A is 1/3 and B 2/3. How does MWI explain this?

[matthew]

So would the world's still be branching if there were no humans? Would the branching happen in a static Universe?

[junevandermark]

Quantum physics ... not quantum psychics.

[MoebiusUK]

So do these other universes all conform to the same laws of physics as our one?

Is the speed of light the same? Gravity? Cosmological constant?