How did they prove that Universe doesn't know the outcome of a random experiment until we actually observe it?
This is like saying that nothing exist beyond our field of view?![]()
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How did they prove that Universe doesn't know the outcome of a random experiment until we actually observe it?
This is like saying that nothing exist beyond our field of view?![]()
I've often wondered how lightening finds the fastest route to the ground....if that's not planned in advance what is?
Various paths are explored until one reaches the ground.
Lightning captured at 7,207 images per second - YouTube
An amazing video, many thanks.
You are referring to the notion of "counterfactual (in)definiteness". Counterfactual definiteness is something that we tend to assume, but in fact there can never be any evidence of it (because any observation that attempts to confirm counterfactual definiteness invalidates it). However, it should be stressed that even an indirect observation is sufficient as an observation with regards to counterfactual definiteness, thus indirect observations cannot confirm counterfactual definiteness. Bell's theorem says that quantum mechanics cannot be both local and counterfactually definite. However, since counterfactual definiteness is only an assumption, I see no reason to maintain that quantum mechanics is counterfactually definite.
I don't think you need to observe it. Schroedingers cat is alive or dead whether you open the box or not. It is the importance of having a boundry condition that allows an entropy increase in the system. Once the interaction takes place it becomes irreversible and the system changes whether you look at it or not.
No, there is a difference between a real tree and a tree at quantum level. Relative determinism in the physical world is only a by product of high probability at quantum level.
The example of cat is different...the cat actually has a state which is highly probabilistic in nature, since it's state directly depends on a quantum process.
I don't think you need to observe it. Schrodinger cat is alive or dead whether you open the box or not. It is the importance of having a boundary condition that allows an entropy increase in the system. Once the interaction takes place it becomes irreversible and the system changes whether you look at it or not.Cat will only know if it's alive only if it's alive. So it doesn't call the shots here.
Boundary condition??? That argument is only given to divert our attention from the inexplicable.
The boundary conditions are defined such that the cat would be dead if the process did happen.
No, I think a forensic scientist would be able to establish pretty accurately the time of death from the temperature of said dead cat. What I mean by boundry condition is a condition in time that cannot be changed once it has occurred. The process becomes irreversible from that point on.
Hey, no one said that cat dies when you see it's dead body personally. Since it is quantum process the cat's reality becomes entangled with the process. It's the reality that changes when we look. hence the saying "mere observation can change the outcome of an experiment".
What I mean by boundary condition is a condition in time that cannot be changed once it has occurred.The process becomes irreversible from that point on.![]()
Maybe we don't understand reality completely.
Maybe that's true, but generally it's accepted that it's not the power of observation that makes the difference between the quantum and non quantum world. It the interaction with the world at large. If there is an increase in entropy that's it... time equals zero again and there is no going back.
So how do you explain spooky action at a distance? Magic?
I think we can change a past event if we haven't observed that event yet. Different observers can have different notions of time and sequence of events in a process. Regardless of this each one should observe the same result. I mean any unobserved event is not a real event but a probabilistic one. Anything thats recorded in history can't be changed, because the events have been observed by an observer or a group of observers.
In so far as the evolution of the system remains reversible then I would agree with you. But I don't agree that you need observers to record an event. A piece of photographic film or a dead cat will do just as well..... Unless of course you take the Many Worlds view. The consequence of that that is that you as an observer would need to tell someone about it or you would just become part of the superposition like the cat and it would still be undecided. In fact until you had told everyone in the universe you could never be sure!
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