All Activity

That is not how it works, though. The papers will outline the statistical method in the methods section. That will tell you (if you know how to read) a fair bit about things like how strong the observed effects are, the cohort size and composition can be used to evaluate how specific or universal the data set might be and so on. For example, a paper doing calculations with only three patients is not going to have the statistical power of a study with a cohort of a few thousand participants.You just don't look at numbers without context. This, for example in isolation is entirely worthless. One would need to read the paper and look at how they arrived at that number. Especially the use of percentages without showing base value is not telling much.

I am not a doctor, I don’t know how often it happens. I just read the book. But this often occurs when they are dealing with the unknown. We all heard of people going to see multiple doctors or patients being misdiagnosed. My question is are the statics helping or hindering how we judge a credible paper? They give you a way to sum up a paper after the abstract, but using stats to summarize the value of a paper imho would lead to disagreement among doctors. Obviously there must be other sorting and cataloging methods, but I am focusing on stats. For instance there was a study report on the local news that processed red meat consumption increased risk of dementia 13%. That is useful and sounds like a worthwhile study. But can we use these stats to compare to other works? This is computational science. The rest of this post is just mho and is meant more for discussion than factual science. But the red meat study followed 30,000 people for several years. I think data science is being applied to everything to find the big discovery. Instead we are getting massive amounts of endless data. So we turn to ai to sort this data. The Sixth Sally or How Trurl and Klapaucius Created a Demon of the Second Kind to Defeat the Pirate Pugg This story explains everything.

Yep, this is the goal. Sure, but it's not time to give up yet. I'll do this next. Thanks.

If there’s a leak in the filtration system, isolating it would allow one to measure the pool level change and see if it reverted to the evaporation value, rather than probing the ground.

Fair. I’m no expert on moisture meters, but I bet there’s a tool or process beyond divining rods to figure out which areas around the drain line are wettest relative to the surrounding vicinity. With that knowledge in hand, you could then focus your dig on a smaller section of yard. Otherwise, just redo the whole line and move on with your life.

You posted “Besides pretending to be making progress on a "warp drive" Elon is also claiming A "Revolutionary Anti-Gravity Fighter Jet."” and “That is how easily Elon lies” which is quite clear in saying that claims are from Musk. If you’re going to go on about people posting misleading stuff, perhaps you should get your own house in order.

Thank you. The issue is, if I understand correctly, that they are designed to measure moisture in a gardening soil, although one of the meters mentions wood and drywall. My "ground" is not a soil. It is a mix of coarse sand, rocks, and gravel. Add mostly arid climate (except in rainy season, when everything is soaking wet). I doubt there is any moisture above the leak.

No they can’t. These are 3D standing wave patterns, similar to the “spherical harmonics” you can excite by striking a rubber ball and watching its deformation with a stroboscope: And relying on AI in the way you are trying to is going to lead you astray. Don’t outsource your understanding to a bot.

I will offer you a simpler experiment. Place your palm in the water and move it back and forth to create resistance. When moving backwards you will feel more resistance than when moving forward. This energy is taken from the water, it is its free thermal energy. This is explained by the effect of added mass. The asymmetry of the pendulum's oscillations, acceleration and deceleration, allows this to be used. I will need time to give a more detailed explanation, I can do this later.

Blimey! So the vent pipe was dipping into the water in the header tank. How weird. So you would have had cold water being sucked down the vent pipe when you ran hot water off. Not a great piece of plumbing, by the sound of it. But now I see why it had the effect it had. Comforting to know the cylinder can pop back into shape rather than splitting at the seams, at any rate. 🙂

This is a bit silly. Musk would have better things to do than try to take down videos making outlandish claims on his behalf, even if he were a person interested in truthfulness (which he is not, I agree). You can’t blame him for crap posted by other people. But you posted these videos, here on this forum, as evidence Musk was making false claims about warp drive and an anti- gravity fighter aircraft. So you took them at face value, without checking. That is not very sensible. Before responding to your post, I made a quick search for any claims involving Musk and either warp drive or anti- gravity…….and found nothing at all. So it seems to be BS.

So children should be subjected to authoritarian regimes?

Well, fair enough. I probably had a more myopic idea of what constitutes research in my mind, mea culpa. Though there are also many such channels with "hacks" in their titles, which seemingly are good ways to ruin things (especially food). But I think my main point still is that you have to be capable of sorting through a lot of nonsense, depending on topic, I think that DIY in general is not quite as infested as a myriad of other topics.

Depends on the topic, intent, and channel. YouTube is an amazing resource for learning how to DIY stuff in the home or for fixing autos, for example. User critical thinking still required, but mention of “any topic” made me bristle

Mmm. Sounds tasty! Any impact on your health from consuming foam rods as they break down? Allowing a slow drip from a faucet also helps prevent pipe rupture if ice forms.

Grab a soil moisture probe and start poking around in a grid pattern. Record measurements taken within each cell of your grid and see where it’s wettest https://www.bestbuypick.com/elite/best-5-soil-moisture-meters-of-2024-2/ Do it every foot or 2 for more granular precise measures https://www.bobvila.com/articles/best-soil-moisture-meter/

Here is an easy experiment you can try. Equipment 1 sink of water 4 dinner plates 1 washing up brush Immerse the stack of plates in the sink of water, make sure they are completely submerged. Take the washing up brush and make a swirl in the water above the plates. Report what happens when you go faster and faster. Where did the force come from ?

He is not a practicing scientist

The discharge pipe went straight up from the airing cupboard containing the tank into the attic and curved over the header tank to discharge into it. Straight into the block of ice at the top of that tank.

I think there are mostly slight variations in mammals (IIRC horses, rodents and rabbits, perhaps others are obligate nose breathers as the epiglottis basically seals off the other passage). But I think only mammals actually have it. Birds and reptiles certainly don't. And well, animals without lungs are unlikely to have those, either.

That, unfortunately is a huge can of worms. Mis and Disinformation is rampant on social media and we have seen plenty of cases of high-threat situation where those ultimately cost lives. I am honestly not sure what the topic here is as the issue goes well beyond individuals, even if if folks like Musk clearly are powerful amplifiers.

Asked a few questions to the AI. Here are three excerpts: “When atoms or molecules approach each other, the electron cloud of one can be polarized by the nucleus of the other, causing a temporary or permanent shift in electron density toward the more charged nucleus.” “Even at significant distances, weak van der Waals interactions can polarize the electron cloud slightly, creating an asymmetry in the electron density distribution. This can cause the probability cloud to shift or deform slightly toward the neighboring atom.” “By the Heisenberg uncertainty principle, the more precisely we know the position of an electron (i.e., its probability density), the less precisely we can know its momentum, and hence its kinetic energy. This means that in regions of high probability density, an electron has a large uncertainty in its velocity and momentum, which can lead to an increased kinetic energy.” In my model, pendulums have greater kinetic energy and speed when passing opposite the nucleus of a neighboring atom, and this may be analogous to a region of high probability density according to the AI text. In addition, if the orbitals of the model overlap each other, this will create a region in which pendulums will pass alternately, which gives a higher probability of finding them there and this may correspond to a probability cloud when the orbitals of atoms overlap. Further, in the figure below, it is seen that in regions close to neighboring atoms, the orbitals are compressed and if we imagine the electron as a ball in an orbit, it travels a shorter path, which may mean its greater energy and speed. If so, then this corresponds to the model with pendulums. In addition, orbitals can be considered as waves coming from the boat. They are also compressed (shorter) in front, in the direction where it is attracted, and expanded (longer) behind Absolutely right, it happens. As you have drawn, the boat wags its hull like a fish wags its tail due to the displacement of the center of mass that occurs during the interaction of the magnets.

You probably meant to type Potassium sodium tartrate. It is quite soluble. Now, on the 85% KOH, I am using conc KOH and conc NaOH. KOH conc is 11.7N and NaOH is 19N, both +/-. Already in solution form. But anyway, good tips just the same. I will proceed to mix a small sample, maybe just 100mls, and see how it goes. I trust yous agree with my stoichiometry calculations, in theory anyway. Will report back!! Thanks for the support.

Exbiologist here. The layout is the same in all vertebrates. Air is priority. Food coming down will automatically close the airway, in this arrangement, to ensure no aspiration. (assuming no pathology)

"Who should have children?" People living in North Korea, Russia, Europe, and China, for starters. There are dwindling workers, in those countries, to support the elderly retired. The USA will have to recon with this eventually. "Countries with a total fertility rate (TFR) below 2 children per woman are generally considered to have fertility levels below the replacement rate, which is roughly 2.1 children per woman in most developed countries. This threshold is necessary for a population to replace itself without migration. As of recent data, many countries fall into this category, particularly in Europe, Asia, and the Americas. Most European countries have fertility rates below 2, including: Germany, Italy, Spain, Portugal, France, the United Kingdom, Russia, Poland, Ukraine, Hungary, Sweden, Denmark, and Finland. Many Asian countries also have low fertility rates, including: South Korea (among the lowest globally), Japan, China, Taiwan, and Hong Kong. Thailand, Singapore, and Vietnam. Iran and Sri Lanka. Several countries in North and South America have TFRs below 2: United States, Canada, and Puerto Rico. Brazil, Chile, and Uruguay. Australia and New Zealand have fertility rates below 2. While most African nations have fertility rates above 2, a few exceptions exist: North African countries like Tunisia and Libya. "Factors Contributing to Low Fertility Rates: Urbanization: Urban lifestyles tend to reduce fertility rates. Education and Employment: Higher levels of education and workforce participation among women are associated with lower fertility. Economic Factors: High costs of living, child-rearing, and housing can deter larger families. Cultural Shifts: Changing attitudes toward marriage, family size, and gender roles. Access to Contraception: Widespread availability and use of contraceptives reduce unplanned pregnancies. "Low fertility rates are often linked to aging populations and concerns about labor shortages, leading some countries to adopt policies to encourage higher birth rates, such as paid parental leave, subsidies, and housing benefits." Birth Rate by Country 2024