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Multiverse and possible worlds.

Jackson April 22, 2022 at 03:09 4075 views 22 comments
Leibniz introduced the concept of possible worlds. Though he talks about possible worlds in terms of the infinite worlds God chose from, it is clear he meant the term more universally. As current theory of multiple worlds in quantum physics goes, different possibilities for the universe exist simultaneously.

Comments (22)

Jackson April 22, 2022 at 03:13 #684463
A possible world is a logical structure. A system, or world, that is governed by a rule.
Haglund April 22, 2022 at 03:27 #684469
Quoting Jackson
As current theory of multiple worlds in quantum physics goes, different possibilities for the universe exist simultaneously.



Yes, and?

But the initial state of the universe is unique in this picture. The MWI was introduced to ensure unitarity in QM, during an interaction, which is just a mathematical necessity imposed on the world which doesn't have to hold physically. It's conceivable that a wavefunction collapses non-unitarily in a different interpretation of the wavefunction collapse.

Infinitely many inital worlds are not contained in this MWI.
Jackson April 22, 2022 at 04:12 #684505
Reply to Haglund Quoting Haglund
Yes, and?


And monads.
Bartricks April 22, 2022 at 04:25 #684515
Reply to Jackson What are you talking about?

I don't believe in possible worlds. I believe in Toity worlds. Have you read Toity Worlds by Prof. Boule Sheet?

Prof. Sheet distinguishes between two kinds of truth: hoity truths and toity truths.

What's a toity truth? Well, a toity truth, Prof. Sheet tells us, is a truth that is true in at least one toity world.
What's a hoity truth? A hoity truth is a truth that is true in 'all' toity worlds.

What's a toity world? Well, it's just a device to make clearer what a toity truth is.
Jackson April 22, 2022 at 04:26 #684516
Reply to Bartricks

Interesting.
Jackson April 22, 2022 at 04:28 #684520
Quoting Bartricks
I don't believe in possible worlds. I believe in Toity worlds. Have you read Toity Worlds by Prof. Boule Sheet?

Prof. Sheet distinguishes between two kinds of truth: hoity truths and toity truths.

What's a toity truth? Well, a toity truth, Prof. Sheet tells us, is a truth that is true in at least one toity world.
What's a hoity truth? A hoity truth is a truth that is true in 'all' toity worlds.

What's a toity world? Well, it's just a device to make clearer what a toity truth is.


When I was 8 old I found this to be funny. Not since then.
jgill April 22, 2022 at 04:31 #684522
Quoting Bartricks
What's a toity world? Well, it's just a device to make clearer what a toity truth is.


It's refreshing that, having assumed all avenues of original philosophical exploration had been traveled, something novel and appealing bubbles up from spilled beer at the local bar. :strong:
Bartricks April 22, 2022 at 04:31 #684524
Reply to Jackson Then you are as lacking in humour as you are in insight. Substitute 'possible' for 'toity' and 'necessary' for 'hoity' and then see if that produces any mirth in you.
Jackson April 22, 2022 at 04:32 #684526
Quoting Bartricks
Then you are as lacking in humour as you are in insight. Substitute 'possible' for 'toity' and 'necessary' for 'hoity' and then see if that produces any mirth in you.


If you don't like philosophy, try posting on a chit chat site.
Bartricks April 22, 2022 at 04:33 #684527
Reply to Jackson I'm a philosopher.

Now, what do you understand a possible world to be? And can you distinguish one from a toity world?
Jackson April 22, 2022 at 04:34 #684528
Quoting Bartricks
Now, what do you understand a possible world to be? And can you distinguish one from a toity world?


Goodbye.
Bartricks April 22, 2022 at 04:35 #684529
Reply to Jackson That makes no sense.

Come on - what's a possible world and how is one different from a toity world?
javi2541997 April 22, 2022 at 05:15 #684543
Quoting Jackson
A possible world is a logical structure. A system, or world, that is governed by a rule.


The logical structure itself is made by us. In one side, we have a world or "universe" and, in the other side, we the humans make an order to live on those structures. We do not really know yet how many x universes or worlds exist with our same logical structure. I think this is due to that the term "logic" is something we created. The universe exists itself, "it" doesn't care about how many logic worlds are on it
Haglund April 22, 2022 at 05:22 #684549
Quoting Bartricks
Now, what do you understand a possible world to be? And can you distinguish one from a toity world?


I have to admit, you got humour! :lol:
Banno April 22, 2022 at 05:59 #684563
Reply to Jackson Two very different things with a similar name. Modal possible worlds, the sort Leibniz discussed, are used to discuss problems in modal logic. The many-worlds interpretation of QM is used to solve problems in physics.

They are worlds apart.
Jackson April 22, 2022 at 06:16 #684580
Quoting Banno
Two very different things with a similar name. Modal possible worlds, the sort Leibniz discussed, are used to discuss problems in modal logic. The many-worlds interpretation of QM is used to solve problems in physics.


Small minds think small thoughts.
Banno April 22, 2022 at 06:20 #684583
Reply to Jackson But you and I can do better...

Did you peruse the links to SEP articles on each?
Haglund April 22, 2022 at 07:02 #684598
Quoting Jackson
And monads.


What about them? Can't monads exist in many worlds? Nomads travel between them. Monads stay in one.

One is not immortal in the MWI. At one branching point one encounters a superposition of death. The so-called death collapse.
Jackson April 22, 2022 at 14:21 #684701
Quoting Haglund
What about them? Can't monads exist in many worlds? Nomads travel between them. Monads stay in one.


Nomads?
Jackson April 22, 2022 at 14:23 #684704
Quoting Banno
Did you peruse the links to SEP articles on each?

Stop misquoting me. It is wrong.
Haglund April 23, 2022 at 04:59 #684903
Quoting Jackson
What about them? Can't monads exist in many worlds? Nomads travel between them. Monads stay in one.
— Haglund

Nomads?


Nomads travel from world to world, like the Roma on that beautiful painting of van Gogh. What color, light and atmosphere! Monads, on the other hand, are stuck in a category, in one world. If there are many parallel worlds, like in the MWI, what determines you find yourself in this particular one? Which is only particular in the context of the others. How can we ever know there are other worlds?
Haglund April 23, 2022 at 05:07 #684904
There couldn't have existed a world in which the airplane above the city flew on a different line, while everything else is the same. Such a world can't come to be after a next big bang. Out of the question, I might humbly add.