PeterDonis's latest activity
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PeterDonis replied to the thread Undergrad If gravity is emergent, how does this affect string theory and loop quantum gravity?."Emergent" is a theoretical concept. If we have a theory that says gravity is emergent, we can test the theory. But we can't just do an... -
PeterDonis reacted to Roberto Pavani's post in the thread Undergrad Why the initial choice matters in the Monty Hall problem with
Like.
I'm amazed by the length of this thread. In a sense, it confirms what I've often thought about statistics and probability: the rules... -
PeterDonis reacted to Dale's post in the thread Undergrad Why the initial choice matters in the Monty Hall problem with
Haha.
The probability of a Monty Hall thread being only 2 posts long is substantially less than 1/3. -
PeterDonis reacted to PeroK's post in the thread Undergrad Why the initial choice matters in the Monty Hall problem with Like.
I thought of another angle. Imagine the game is played simultaneously by three players, each with their own instance of the game. In...
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PeterDonis reacted to Dale's post in the thread Undergrad Why the initial choice matters in the Monty Hall problem with Like.
Another way to show that this is a false claim is to directly calculate the amount of information entropy before and after opening the...
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PeterDonis reacted to Dale's post in the thread Undergrad Why the initial choice matters in the Monty Hall problem with Like.
It was far easier than I had thought. Bayes theorem is $$P(H|E)=\frac{P(E|H) \ P(H)}{P(E)}$$ There are ##N## doors. The contestant...
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PeterDonis reacted to Dale's post in the thread Undergrad Why the initial choice matters in the Monty Hall problem with Like.
This is false. They know that the probability of the originally chosen door being a winner is 1/N. They know that N-2 other doors have...
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PeterDonis reacted to PeroK's post in the thread Undergrad Why the initial choice matters in the Monty Hall problem with Like.
You're not calculating probabilities here. Probabilities can be tested by experiment. If we played this game repeatedly, then I could...
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PeterDonis replied to the thread Undergrad If gravity is emergent, how does this affect string theory and loop quantum gravity?.That it's emergent from something else. No, that's not what "gravity" is when we're talking about whether it's emergent or not. What...
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PeterDonis replied to the thread Undergrad Particle vs Wave Interpretations of QM.But the two detectors are detecting different observables. Heuristically, the normal detector screen is detecting position, so it makes...
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PeterDonis reacted to gentzen's post in the thread Undergrad Particle vs Wave Interpretations of QM with Like.
People working on the theoretical side of electron microscopy and charge particle optics know how to compute such scenarios. The...
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PeterDonis reacted to QuarkyMeson's post in the thread Graduate Time evolution of a detected particle with Like.
The problem again is that this is not a normalized momentum probability distribution, its integral over p diverges. So you can't...
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PeterDonis replied to the thread Undergrad Particle vs Wave Interpretations of QM.If the tracks are sufficient to record which path information, why would there be any interference at all?
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PeterDonis replied to the thread Undergrad Particle vs Wave Interpretations of QM.I hadn't thought about that explicitly, but if my claim that the tracks are sufficient to record which path information is correct, my...
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PeterDonis replied to the thread Undergrad Particle vs Wave Interpretations of QM.As I understand it, @Roberto Pavani intended a scenario basically as follows: (1) Start with a double slit experiment setup which is...