Everything posted by Genady
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A Robot Wars like ChatGPT thread
I would be very surprised if the response were identical. And it is in fact quite different:
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A Robot Wars like ChatGPT thread
I think my bot agrees with you. Here is its response:
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Murray Gell-Mann's unflattering description of Richard Feynman
I remember Susskind mentioning that Feynman "certainly was a showman".
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Is it permissible to use infinity, which is not defined in physics, to assume the impossibility of traveling at the speed of light?
If you accelerated a particle to a speed which is arbitrarily close but not equal the speed of light, then there is a reference frame in which the particle is at rest. To accelerate in this frame, you have to start all over again.
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Is it permissible to use infinity, which is not defined in physics, to assume the impossibility of traveling at the speed of light?
I didn't download the attached paper. But I think exceeding speed of light contradicts causality, regardless of what happens to mass/energy.
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Is it permissible to use infinity, which is not defined in physics, to assume the impossibility of traveling at the speed of light?
There are many regularization schemes leading to the same result. AFAIK, Riemann zeta function is one of them and is not necessary. Regularization is not just a mathematical trick. It has physical basis. As explained in Zee, A. Quantum Field Theory in a Nutshell: Second Edition (p. 72). Princeton University Press,
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Everything is one whole
Just a little bit. 😉 I got that. This is what Carl Sagan is good for.
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Everything is one whole
Drive carefully!
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Everything is one whole
What makes you think that the brain's model is frame dependent? Let's assume for a moment that the brain's model is based on Newtonian mechanics. Then it is frame independent, because Newtonian mechanics is frame independent.
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Everything is one whole
It is a short for "frame of reference", but different frames differ in many ways, not only if they are moving or not. They are different coordinate systems in spacetime. For example, cartesian/ polar/ cylindrical coordinates are different frames in space. Just rotating a cartesian frame makes a new frame. I use the word 'frame' because it is shorter than 'system of coordinates.' If a specific frame is inherent part of a model, this model is frame dependent.
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Postulating a Basis for Belief in a Technological Afterlife
I think that your predictions by cherry picked simple extrapolations are, intentionally or not, grossly simplistic for the real world. "It is difficult to make predictions, especially about the future", but I am certain that something very different will actually happen. To @zapatos, you remind an Evangelical preacher. To me, you remind a communist propagandist. Just substitute "classless society" for "human technological advancement" and you get a "hyperhyperdrive" to universal happiness.
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Everything is one whole
Yes, a frame independent value can be measured in a frame. Such a value is 'real'.
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Everything is one whole
I'm sorry, but I don't see a connection. Perhaps we are talking about different things and call them "frames". A frame I'm talking about is for example one that identifies a meeting at 5 pm on the corner of 27th street and 5th avenue. I don't think that frames are real.
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Everything is one whole
"Frames" are coordinate systems. They are arbitrary and there are infinitely many of them. Uncountably infinitely many. They are not models and not interfaces. They are just systems of mapping between some sets of four numbers and events.
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Everything is one whole
Isn't this set frame dependent?
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Everything is one whole
Me too. So, a "whole" is a collection of events which can be causally related?
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Everything is one whole
What is "things"? Do you mean "events"?
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Everything is one whole
In the entanglement, particles do not affect each other.
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Everything is one whole
I don't see how these examples make everything NOT be one whole. Entangled particles, for example, stay entangled regardless of the distance and without any physical interactions between them. The observable universe stays one whole by the virtue of common history.
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Everything is one whole
Of course, there is. Where in science?
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Not so good news for science
Unfortunately, the problem is not limited to a few certain persons. Yes, obviously it is a good thing that these issues are exposed. That's why we need police. Medicine is plagued by untrustworthy clinical trials. How many studies are faked or flawed? (nature.com)
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Not so good news for science
What is especially disturbing to me in this case is the scale. 20 years, president of Stanford, multiple institutions, many people ...
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Strange Things
I remember one morning on my way to work in A train shortly before my station a voice of a friend of mine, Alex, suddenly popped in my head. When I got out of the subway, I found myself in the middle of a mess... It was about 9 o'clock on September 11, 2001. The station was WTC. I looked up and saw a huge hole in the upper part of the North Tower. Alex's office was on the 97th floor... I was sure he was dead, and his voice kept playing in my head until I finally got home that day and found Alex's message on my answering machine. He missed his train that day and was late to work. I don't think I would remember about his voice popping in my head if not for these circumstances.
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Not so good news for science
Stanford president resigns over manipulated research, will retract at least three papers (stanforddaily.com)
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Postulating a Basis for Belief in a Technological Afterlife
How do you know this? Not necessarily, but it is not a brain function. What do you mean by it? Why does the brain need to recover itself? What do you call "recover" in this context?