John Cuthber
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Everything posted by John Cuthber
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Is that why you made that incorrect assertion?
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Would you like another guess?
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Then you are wrong. However there are constructs like "it is impossible until..."
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Can the OP change and become something which has an answer to the question he posed? If not then the thread is pointless; if so then the fact that he asked the question, answers it.
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Why aren't these 1903 and 1904 classic physics papers more mainstream?
John Cuthber replied to BillNye123's topic in Physics
We know that GR has passed every test that it has ever been subject to. If Whittaker's work doesn't agree with GR then it also doesn't agree with experimental observation. And if that's the case then there's a much better underlying reason to ignore it than some supposed "Einsteinian mafia". If it disagrees with GR then it's wrong. My guess is that it is equivalent (give or take some transform) to GR. -
Psychiatry Does Not Exist or Should Not Exist
John Cuthber replied to BillNye123's topic in Psychiatry and Psychology
I presume you didn't read (or didn't understand) the original JAMA paper. It's not restricted to drugs used in psychiatry. So the summary might as well say "Some drugs apparently cause dementia. Some drugs are used in psychiatry but, in general, they are not the same drugs." -
Black 2.0 paint + water exchanger for roof tops.
John Cuthber replied to koti's topic in Experiments
People are currently building and using thermal energy stores. https://en.wikipedia.org/wiki/Thermal_energy_storage -
Psychiatry Does Not Exist or Should Not Exist
John Cuthber replied to BillNye123's topic in Psychiatry and Psychology
Have you any evidence for that? -
Psychiatry Does Not Exist or Should Not Exist
John Cuthber replied to BillNye123's topic in Psychiatry and Psychology
Given that medication is part of therapy... -
And what you said was that you were not going to answer my point. WHERE IS THIS INFORMATION STORED, IF IT IS NOT IN THE GENOME?
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How do we can prove that an infinity set exist?
John Cuthber replied to Vishtasb's topic in Mathematics
Then why didn't you ask it? -
Psychiatry Does Not Exist or Should Not Exist
John Cuthber replied to BillNye123's topic in Psychiatry and Psychology
https://xkcd.com/285/ -
How do we can prove that an infinity set exist?
John Cuthber replied to Vishtasb's topic in Mathematics
"How do we can prove that an infinite set exist?" Well, when we are teaching schoolkids it goes something like this: Teacher " what's the biggest number?" Kid" a thousand" T "what do you get if you add 1 to a thousand?" K "A thousand and one" T "Is that bigger than a thousand? K "Yes" T "And if you said you thought that a thousand and one was the biggest number and I asked you to add 1 to it... then what would happen?" K " you would get a bigger number" T"Now do you understand why there is no biggest number? K "yes" T "So the numbers must go on forever, right?" K "yes" Well, that's pretty much defined an infinite set -
If I get a bunch of matchsticks and cover them with glue, put them in a box, shake them up into some random arrangement and let the glue dry then they have "self assembled" into that shape. But it's almost certainly no use. If I want molecules to self assemble into something useful, I need to "choose"- and specify- those molecules very carefully. And the way I do that is via the genome. You seem to be persistently ignoring all the points I make. May I remind you that the rules of the forum say that you have to address them, otherwise you are engaging in soapboxing, rather than discussion.
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You don't need gluten. What you need is food. Your DNA (albeit helped by gut bacteria) knows how to make the enzymes that break down the food to components that get reorganised into "you". However, it's true that we need, but lack the enzyme(s) to make, vitamin C. We also can't photosynthesise. Well, where is it then?
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That's pretty much the opposite of what I said. I'm saying a tadpole is the expression of information that is internal to the egg and that the place where that information is stored is the genome. It can't get access to any external information. As I said; it hasn't got an instruction book. True, but if I want to specify making a hexagonal structure the instruction I might give is "burn hydrogen and cool the reaction product until it freezes". If I wanted a cubical structure I would say " burn sodium in an atmosphere of chlorine then carefully cool the product." The ice or salt crystals self-assemble, but it's the instruction which defines what shape you get. If you make the wrong molecule, it doesn't work, because it doesn't self assemble into the right thing. How did the body know to produce component parts that would assemble into an eye? It's possible, in principle, to screw up the DNA and get a "mutant" eye. How would that be possible if the DNA didn't control the production of the eye? Shortsightedness is, to a fair degree, heritable. How could that happen without the information being carried from parent to child? Are you saying the mother's eyes wander off to the womb for a bit "to show the foetus how it's done"? And the father's contribution? Your idea just doesn't stand up to serious consideration in its own right. And you still need to say where you think the information about, for example, an eye is stored for the growing offspring if it's not stored as part of the genome. That's not going to cut it on a science page.
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Black 2.0 paint + water exchanger for roof tops.
John Cuthber replied to koti's topic in Experiments
If this is right then black polythene absorbs 93% of the incident light. https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19840015630.pdf You can only hope to get another 7% If the paint isn't cheaper than using 7% more pipe it can't be worth it. -
A Wired Up Beating Heart is Placed in Water...
John Cuthber replied to rutholearywalker's topic in Experiments
"But they pointed to an experience about a wired up beating heart which was placed in water, removed and then a non-wired up heart being placed in the same water and began beating. They credited to a documentary called "The Memory of Water"" I would credit it to epinephrine left behind by the first heart. Once that "kick starts" the second heart, it will beat on its own. That's fine, but you should be very clear about the range of issues it can actually treat At best "The UK's National Health Service says there is "limited evidence" that osteopathy "may be effective for some types of neck, shoulder or lower limb pain and recovery after hip or knee operations", but that there is no evidence that osteopathy is effective as a treatment for health conditions unrelated to the bones and muscles." At worst "Others have concluded that there is insufficient evidence to suggest efficacy for osteopathic style manipulation in treating musculoskeletal pain." Both from https://en.wikipedia.org/wiki/Osteopathy Then they ae, at best, misguided. https://xkcd.com/765/ -
Yep, that's part A of his problem- it's a non sequitur. Part B is that he's unable to say where the information is stored (since he says' it's not in the genome). If he ever gets us beyond that, we can look at the other strange/ impossible claims he's made. I am not holding my breath.
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And the thing that "knows how" to make the bits which self-organise (whether it's at the level of lipid bilayers or limbs) is DNA. The information is essentially encoded into the genome.
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Black 2.0 paint + water exchanger for roof tops.
John Cuthber replied to koti's topic in Experiments
Sanding black plastic, not metal. But I think using a pipe that's 2% longer would be easier. -
Black 2.0 paint + water exchanger for roof tops.
John Cuthber replied to koti's topic in Experiments
Given that the stuff is "black" the absorption of light is probably well over 50% so you can't do better than doubling the efficiency (on that score). Using two sets of pipe would get twice the energy. What's the price of vantablack compared to another hundred yards of pipe?? You need to put a box with double glazing over the pipes to keep them warm. I gather the usual use of such a system is to pre heat water, before a more conventional system gets it hot enough to shower with or whatever. You might be able to use it as a source for a heat pump. In any event, you have a choice of problems, either clean water runs through the pipe in which case it will freeze in winter or you have antifreeze in the pipe and some sort of heat exchanger which adds enormously to the complexity A big advantage to plastic pipe is that it doesn't have any joints to leak. Good luck to anyone constructing a closed box which will hold water for a few years.