Many worlds and parallel universes

Many worlds and parallel universes

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Dr Jekyll

Original Poster:

23,820 posts

261 months

Friday 14th April 2017
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Is this still a respectable if minority interpretation of quantum effects? Or is it discredited totally?

I do rather like the idea that somewhere in a parallel universe I'm driving my XJ13 along a derestricted motorway to my job as a TSR2 pilot.

Dr Jekyll

Original Poster:

23,820 posts

261 months

Saturday 15th April 2017
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Simpo Two said:
If infinity was really infinity then eventually you'd encounter exactly that. And then a bit further along, the same but one of the trees is different.... and so on...
Expect that wouldn't quite be me just someone identical to me. What intrigues me is the thought that what might have happened if I'd done something different in 1967 is being played out somewhere.

Infinity is odd anyway. Not only does everything, however unlikely, happen somewhere. It happens an infinite number of times. But still far less often than more likely things.

Dr Jekyll

Original Poster:

23,820 posts

261 months

Saturday 15th April 2017
quotequote all
Simpo Two said:
You could argue that if infinity is infinite then by definition every concievable variant is not only likely but certain!
Exactly, so what do we mean by likely?

Dr Jekyll

Original Poster:

23,820 posts

261 months

Saturday 15th April 2017
quotequote all
ATG said:
Dr Jekyll said:
Simpo Two said:
You could argue that if infinity is infinite then by definition every concievable variant is not only likely but certain!
Exactly, so what do we mean by likely?
"Likely" is a relative term. "A is more likely than B" unambiguously means that we expect to see A happen more frequently than B.
....while in an infinite universe everything is certain to happen an infinite number of times.


It's some infinite numbers being higher than others that I have a problem with.

Dr Jekyll

Original Poster:

23,820 posts

261 months

Sunday 16th April 2017
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Toltec said:
Dr Jekyll said:
Is this still a respectable if minority interpretation of quantum effects? Or is it discredited totally?

I do rather like the idea that somewhere in a parallel universe I'm driving my XJ13 along a derestricted motorway to my job as a TSR2 pilot.
Unfortunately that also means that somewhere you are driving your XJ13 along a derestricted motorway to your job as an estate agent.
You have a point there.