Genady

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.

Stanford president resigns over manipulated research, will retract at least three papers (stanforddaily.com)

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?

I'd hypothesize that "senses" about that person randomly popped into your head thousands of times before and were forgotten because of having no handle to remember them. But this time the memory of the "sense" is accessible because of the dramatic connection to the real-life event.

I am sorry, I don't understand your idea of a relation between these numbers and a triangle or an arc.

For the last two days I've been "studying" recent and ongoing discussions in half a dozen different science forums. They differ to some degree and the choice depends on personal preferences. I'll stick with this one.

Exactly. This is what I do and never have any issues. Grape/ cherry/ snack tomatoes.

Depends on the kind of tomato, perhaps.

I don't know what you mean here, i.e., what should be the same. The body A has velocity v in S, and velocity v'=0 in S'. The body B has velocity u=v/(4-3v2/c2)1/2 in S, and velocity u'=(u-v)/(1-uv/c2) in S'.

The origin of S moves with the speed -v in S'. The body B moves with the speed u in S. Use relativistic velocity addition formula: the speed of B in S' = (u-v)/(1-uv/c2).

There is only one frame in your example. What you've calculated is, that if body A moves with velocity v and body B of the same mass moves with velocity u=v/(4-3v2/c2)1/2, then momentum of the body B equals half of momentum of the body A. All in the same one frame.

No, if it turns out to be a quantum machine, nothing can recover its state without destroying it. Yes, there are. Your nanomachines or whatever cannot measure positions and momenta of these particles and thus cannot recreate them.

No, I was not. See my response here:

Thank you. I will check it.

Would you point to these?

Life is not a state, it is rather a sequence of states. If there is only a finite number of states, the states will necessarily repeat, but the sequence will not. A sequence of a finite number of states can be infinitely long without repeating itself.

From repeated hints in posts, I understand that many members of SFN also participate in other online science forums. What's the point of it? Do mostly the same people discuss mostly the same questions on different websites? What would be a reason for me to do so?

In the related news, AI resurrection of Brazilian singer for car ad sparks joy and ethical worries | Brazil | The Guardian

Stone-age men thought that how fast you run is limited only by your abilities. We know now that it is limited by the speed of light.

Now it is YOU who is stuck in 2023, it seems. ... and other important components. For a simple example, myelin sheath structures control rate of propagation of signals in neurons. Different rates cause differences in arrival times of the signals. This affects the spikes. Etc. Lesser? This is how drugs affect brain. They don't modify neuron connections. The effects are dramatic, though. Paraphrasing YOU just a bit,

me too

In the case of quantum computers, it does.

Neurons and their connections are not the whole story of the brain. Quantum computers are macro, too. They operate on quantum, nevertheless.

It is definitely more than this. Much more. Quantum Mechanics' laws are.

In quantum computers, only one impulse travels at a time. It does not make them any "less" quantum. "Quantum" does not mean "fuzzy". It means that elementary units are quantum states, and operations are unitary.