1. ## iNow

Senior Members

60

22559

2. ## MigL

Senior Members

49

6685

Moderators

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46130

4. ## joigus

Senior Members

32

1803

## Popular Content

Showing content with the highest reputation since 12/23/20 in all areas

1. 4 points

## A very tough (and possibly controversial) poll about sexual abuse and rape

While this thread is closed and (I think) being the only person who identifies as female in this thread, I just wanted to provide a little food for thought. Of all the women in my life with whom I am close to, I can't think of a single one who hasn't been sexually assaulted or raped by a man at some point in her life. I cannot say the same about the men I know wrt to false accusations. Anecdotal I know, but something to think about.
2. 4 points

## The Red Wide-Open Spaces of the USA

The point is that these two maps represent the exact same election yet tell vastly different stories about it. One of those stories is much more accurate than the other. An electoral map rendered in a traditional style shows county-by-county data from the 2016 presidential election. (Jetpack.AI) An electoral map by Karim Douieb shows voting by population rather than strictly by geography. In place of vast swaths of red or blue, the map reveals the mixed nature of voting patterns. (Jetpack.AI)
3. 3 points

## Blow to US Democracy -Split from: U.S. presidential election modelling

I'm genuinely relieved that the inauguration proceeded without bloodshed
4. 3 points

## Recently Discovered Dinosaur ‘Mummy’ Is So Well-Preserved It Even Has The Skin And Guts Intact

https://earthlymission.com/dinosaur-mummy-science-discovery-nodosaur-intact-canada/?fbclid=IwAR2wWqKTY7lykqaIexocCP6L16aepPxOVr1dXe-bVywjNbJldL54l3fjgdM Scientists are hailing it as the best-preserved dinosaur specimen ever discovered. That’s why you cannot see its bones – they remain covered by intact skin and armor. This dinosaur was built like a tank. A member of a newly discovered species called nodosaur, it was an enormous four-legged herbivore protected by a spiky, plated armor. It weighed approximately 3,000 pounds. To give you an idea of how intact the mummified nodosaur is: it still weighs 2,500 pounds! more at link................
5. 3 points

## A study has found that phone causes a threefold risk of brain cancer, how worried should we be?

Thank you so much! May I ask one last question? I would imagine cancer would be at a huge scale right now if phones are harmful. Like, it takes 10-15 years to develop radiation-linked cancer, and right now rates are dropping. Phones became commonplace in the mid 90s, 26 years ago. Most recent data (from 2018) shows a decline in cancer rates, 23 years after phones became popular. Surely if phones did cause cancer we’d see it by now in the rates?
6. 3 points

## General health vs vaccines for immune system.

Dim - While your fortune cookie posts and novel views on questions are often fun, this might be a time where it's better to let a person familiar with the literature and process of vaccine-based immunity respond to the actual question asked in the OP Fairly sure a reference to "War of the Worlds" is not going to be helpful here, despite being interesting in its own right
7. 3 points

## My "Refreshing Universe" Theory

! Moderator Note I’m moving this to Speculations for now, as that is the correct forum section for personal theories. Why would accelerated expansion be an issue? It’s a natural geometric property of this type of spacetime, and thus fully consistent with the gravitational field equations. Gravity is a geometric property of spacetime; to be more exact, it is geodesic deviation, i.e. the failure of initially parallel geodesics to remain parallel. Using the mathematical tools of cosmology, it is possible to construct a universe that - starting from a Big Bang - first expands, then slows, stops, and re-contracts to end up in a Big Crunch again, only for the cycle to repeat over and over again. The problem is that this is not consistent with what we actually observe in the real world. We already have a very detailed model of (classical) gravity, being General Relativity, which works extremely well - what you seem to propose is not very consistent with what we already know about gravity.
8. 3 points

## Jellyfish Build Walls of Water to Swim Around the Ocean

https://www.nytimes.com/2021/01/07/science/jellyfish-swimming-vortex.html contains cool gif at the top of a jellyfish swimming through laser sheet with tracer particles. https://royalsocietypublishing.org/doi/10.1098/rspb.2020.2494
9. 3 points

## Blow to US Democracy -Split from: U.S. presidential election modelling

I think the problem is that Trump is very much a Republican. For many in the GOP, he only just now crossed the line with sedition and insurrection (and for others, he hasn’t crossed it yet. Elected officials and the GOP base) The senate could have convicted him after he was impeached, but chose not to. The voters could have voted for someone else, or stayed home, but he got even more votes after 4 years of his actions being front and center. He’s been carrying out the GOP’s policies - restrictive immigration if you aren’t white and Christian, tax cuts for the rich, voter suppression, deregulation, no healthcare, abd fully-aligned with Mitch McConnell’s aim to un-do pretty much everything Obama did. No, the notion that Trump is not a Republican doesn’t hold water. To the extent that it appears to be, it’s because certain political views are reprehensible, and the site is biased towards views that reject them. That would give the appearance of this bias. White supremacy would be one example, or political stances that reject treating groups of people equally. The membership is slanted heavily toward those that are interested in science, and it’s not the site’s fault that some political groups reject science that they don’t like.
10. 3 points

## Blow to US Democracy -Split from: U.S. presidential election modelling

In the thread I started, 'Canadian Protests', in Feb 2020, where no actual violence occurred because police chose not to enforce the law, and allowed unlawful behaviour for months, your reply was "Like in Hong Kong, at some point we need to realize the protestors have a poor and that its worth fighting for." Phi for All replied "I don't know about Canadian law, but in the US, the courts don't overturn bad laws on their own, they need people to break them and then argue in court why it was the right thing to do." Dimreepr said "One man's terrorist is another man's freedom fighter; it depends, in general, on which side of the poverty line he resides." Do I need to find you more ? I imagine D Trump thought that the reason for inciting this protest ... "Because that’s the only way enough people will begin paying the required attention to actually change things. If the status quo is too comfortable for you, you’ll act as an obstacle to the change" I assume the protesters, at D Trump's urging, attempted to make Democracy too uncomfortable for Americans. Oh, and I'm not suggesting any equivalence between the above mentioned Canadian protests, and what happened Wednesday in the Capital. But both were unlawful, and only differed by degree.
11. 3 points

## what do scientists do after leaving academia?

What, you don’t like rolling 3 month contracts completely contingent on obtaining a portion of the ever-dwindling pools of grant money available? Weird.
12. 3 points

## Blow to US Democracy -Split from: U.S. presidential election modelling

! Moderator Note I have split the increasingly off-topic discussion into a new thread. I apologize for taking matters into my own hands but there are few mods available and most have taken part in this thread.
13. 3 points

## One thing that has become apparent after watching the Capital be over run by insurgen

One thing that has become apparent after watching the Capital be over run by insurgents seeking to tear down our government is that across this great land a great many towns and villages are missing their Idiots...
14. 3 points

## Random Mutations and Biological Evolution

Most mutations are neutral. The lottery analogy fails due to the fact that evolution is a population level process. A diploid human genome experiences 175 mutations per generation on average. There were 3,745,540 human births in 2019 alone. That's 655,469,500 mutations across the human population in one year. Diploid human genome size is 6.4 Gb - so that population level mutational likelihood space is approximately 10% of the whole human genome in a single year. Next, "fitness" in evolutionary terms is discretely defined as genetic contribution to the subsequent generation. By definition, if a mutation is beneficial, it increases in frequency in subsequent generations (complications of neutral genetic drift aside). Therefore, "random" (they aren't actually random - only naïve with respect to fitness) explores significant portions of the human (or other species) total adaptive landscape every generation, and by definition, beneficial mutations, proliferate through the population throughout subsequent generations.
15. 3 points

16. 3 points

## To abstract or not to abstract

I’m sympathetic to the point you’re making, but you are wrong. These exchanges DO lead to changes in thinking. They’re obviously not effective in achieving that 100% of the time, but they are effective at least some of the time. Our challenges also often plant the seeds of doubt which may later grow and sprout. The brain is a wonderful calculator and it will often chew on logical inconsistencies in the background when we’re not even aware of them. It seeks ways for things to make sense and to align. Perhaps the participant isn’t convinced by our replies today, but maybe 3 or 7 or 19 years from now while singing in the shower or tying their shoelaces or chopping wood there will be an epiphany moment and the gears of the clock will suddenly stop grinding and will start clicking cleanly and without slips. That “Aha! Of course!!” eureka moment can come at any time. And... Even if the participant isn’t convinced, there are often silent readers paying attention from the sidelines weighing their own doubts... thirsting to be convinced one way or the other and relying on what they see in threads like these to help make sense of it all... to see who’s arguments are nonsense and which are convincing... here specifically to quench their desire to be swayed. Then finally... even if NONE of that were true, it is still vital IMO to stand up and defend what is valid and what is true for its own sake... to challenge fictions and push for rational reasonable thinking wherever we can. We push back on principle to stop the spread of misinformation and that matters for its own sake, even if the person with whom we’re posting shows no willingness to listen. And I’d wager a sizable amount of coin that you agree with me regarding these points. x-posted with Halc who made similar points from a more personal perspective
17. 3 points

## Opportunity cost of electric and/or self-driving cars

No, I’m not. You could stay home. No reason to subject yourself to “the risk of being run over.” It’s your decision to go out and walk in the street that makes you part of the problem. Your points across threads are so consistently absurd that I believe you’re either very young, very stupid, trolling, or not human.
18. 3 points

## Cora Louise! Granddaughter #3 born today. My siblings and I now have 10 grandchildren

Cora Louise! Granddaughter #3 born today. My siblings and I now have 10 grandchildren between us. All 10 are girls. 😍
19. 3 points

## The Official JOKES SECTION :)

I can't unsee it. Eh?
20. 2 points

## A study has found that phone causes a threefold risk of brain cancer, how worried should we be?

Look at this EM chart: Wifi. and mobile wavelengths are around 3metres long and the lowest level of ionizing radiation is just into the uv range many, many times shorter. Look where visible light is, I don't think that causes ionizing radiation, so how can microwaves cause the purported issues if ionization starts and increases to the right of the uv segment?
21. 2 points

## Tech Giants Shutting Down Violent Social Media Cesspools

I would guess that any hard right ( or hard left ) Government that has aspirations of dictatorship ( Poland maybe ? ) would be trying to force established social media out, so that a Government run/controlled media can more easily disseminate Government propaganda. Makes it much easier to control the people.
22. 2 points

## hijack from An infinite and eternal universe

I have studied GR in some detail, so I am aware of all these possible scenarios; by personality I also tend to be a “natural worrier” who easily gets anxious even over minor things and life events. In addition, I am an Aspie too. Yet I feel no sense of depression, worry or anxiety over the possibility of a cyclical cosmology. Furthermore, you need to remember that the observational evidence we have at the moment is much more consistent with other global topologies, and not a cyclical universe. I believe you when you say that you yourself might find such an idea depressing, but remember that this does not imply that others necessarily relate to the concept in the same way. Most of us here understand the notion of a cyclical cosmology well enough, but don’t find it depressing. I find that people often tend to miss the salient point of Schopenhauer’s philosophy - he did not advocate despair, depression, or absolute nihilism. The main point he was trying to make was about acceptance. It is strictly necessary to fully understand and acknowledge the inherent limitations of the human condition - such as the impossibility to permanently satisfy desires and craving, and the futility of constant strife towards some ideal utopia -, but then it is also necessary to accept them for what they are, and thus arrive at a position of peaceful coexistence with those limitations. Philosophical pessimism does not imply despair and meaninglessness. And of course, philosophical pessimism is only one possible life philosophy, which is by no means shared by everyone.
23. 2 points

## hijack from An infinite and eternal universe

Worrying about unanswerable futures is a waste of the present, and that is the only part that matters.
24. 2 points

## I need some help figuring out if this study is flawed

No, it's not really proof of anything. Tight trousers are associated with reduced fertility. Stuffing a phone into your pocket would tighten them. It's possible that it's something altogether different. If shirts with pockets are more expensive and fertility is related to good foo0d (and thus, to wealth) the correlation may be nothing to do with phones.
25. 2 points

## Solar canals

https://www.bbc.com/future/article/20200803-the-solar-canals-revolutionising-indias-renewable-energy Clever solution
26. 2 points

27. 2 points

## Nuclear Saltwater rocket!

This short video details the idea of a nuclear saltwater rocket. This rocket is pretty much a continuous nuclear explosion propelling the space craft. The vid is short and informative not to mention wild! Should development of such an engine be pursued?
28. 2 points

## Immigration

Where would countries like Australia, New Zealand, Canada, and the USA be without immigration?
29. 2 points

## Tech Giants Shutting Down Violent Social Media Cesspools

All decisions made by private entities. Having free speech does not obligate others to provide you with a platform from which to express it.
30. 2 points

## Political Humor

It's a long border. That would be pretty expensive...Can we just buy 12 days worth?
31. 2 points

## what do scientists do after leaving academia?

Three months? Gosh, you guys must be rolling in money!
32. 2 points

## Today I Learned

Today I learned the US Civil War was not as far back in history as I thought. https://www.yahoo.com/huffpost/civil-war-veteran-widow-helen-jackson-030518406.html
33. 2 points

## Abiogenesis and Chemical Evolution.

I would say false. Evolution is a fact (we observe it and so can't deny it), and the Theory of Evolution describes the process. I don't think there's any need to elevate any theory to "fact" status. It implies that theory isn't strong enough when it certainly is, and we get to keep improving it if it stays a theory. I think it sends the wrong signal when we update "facts" based on new evidence. And welcome back!
34. 2 points

## Random Mutations and Biological Evolution

There are countless observations of natural selection in so called "higher organisms". Many feature as model organisms for natural selection - stickleback fish, toads, anoles, killifish, guppies, monkeyflowers, grasshoppers, Drosophila, jellyfish, lycophytes, to name a few. There are dozens of well known manipulative experiments that have comprehensively demonstrated natural selection in populations of relatively long lived, multicellular organisms, and thousands of population genetic studies on natural populations which do the same. Natural selection in modern humans is also directly observed. The best example that immediately comes to mind is the Framingham Heart Study. I think the concept that you're missing is that selection is dependent on population size. In small populations, genetic drift can overwhelm selection, leading to the loss of beneficial alleles and the fixation of deleterious ones. Conversely, the larger the population size, the lower the selection coefficient required to lead to fixation or extinction of a given mutation. https://www.nature.com/scitable/knowledge/library/natural-selection-genetic-drift-and-gene-flow-15186648/
35. 2 points

## Examples of Awesome, Unexpected Beauty in Nature

Can't Believe I forgot about these. Cave of the Crystals
36. 2 points

## Magnetron as a source of laser spectroscopy

The microwave equivalent of a laser is called a maser. https://en.wikipedia.org/wiki/Maser
37. 2 points

## < 2 Minutes to Midnight

Well, this wasn't at all related to New Year's eve ...
38. 2 points

## Light

The full energy-momentum relation (which is simply the relationship between the temporal and spatial parts of the 4-momentum vector) is $E=\sqrt{m^2c^4+c^2p^2}$ For massive particles at rest you have p=0 and thus $E=mc^2$ For photons you have m=0, and thus $E=pc$ Particles do not need to be stable in order to be elementary. For example, the muon is elementary, but has only a short lifetime. Protons don't decay, so it is "more stable" than the neutron - even though both of them are quark triplets. Neutrinos naturally arise from the way the weak interaction works, since energy and momentum need to be conserved. Protons are not fundamental, they are composed of quark triplets, same as neutrons. They do interact with matter, it's called the Mikheyev-Smirnov-Wolfenstein effect. They also interact gravitationally, if you have enough of them. Gravity is not a force (though it can be approximated as such in the Newtonian limit) - as is easily seen by going into free fall while carrying an accelerometer.
39. 2 points

## The nature of light and the size of the Universe.

Here is what looks like the same passage from English wikipedia. https://en.wikipedia.org/wiki/Michelson–Morley_experiment Note that the above is a full section showing more context and interpretation. Looks like the results of that experiment showed a different outcome that you try to argue?
40. 2 points

41. 2 points

## The possibility of generating Electricity from the thermal vibration of Electrons

Two things are clear to me. 1) All other participents understood the gist of what you said the first time round so there was no need to repeat it. 2) You didn't listen to anything others said, since for instance you repeated your valence electron error (underlined), which is probably why you didn't respond to anyone.
42. 2 points

## The nature of light and the size of the Universe.

So … impossible to prove or detect. That means it has no affect on anything else, or it could be detected indirectly. And if it doesn't affect anything, what is the point of having it in the model ? Maybe you should post your ideas in the Religion section. God is also impossible to prove or detect, and why so many people have no need of Him. Just like the aether.
43. 2 points

## Random Mutations and Biological Evolution

The fitness effects of a mutation are a moving target in a variable environment. While a mutation may be deleterious or neutral in one environment, it may be highly beneficial in another. E.g. antibiotic resistance in bacteria. Further, even if the net number of deleterious mutations outnumber the beneficial, the process of selection increases the likelihood of fixation of beneficial mutations. This seems to be a version of the irreducible complexity fallacy - of which this is a good discussion of. As pointed out above, mutations do not need to be of benefit in the current environment to be prevalent or even fixed in an environment, so a trait can exist that has no contemporary function or benefit. Also, intermediate phenotypes are often more prevalent than many expect - as an example there are both air breathing fish and amphibious fish that can't breathe air that are extant today. Epigenetics and gene interactions may well be associated with beneficial mutation, however neither process could be described as effortful or interactive.
44. 2 points

## Why are QM effects only found at sub-atomic levels?

I will answer this for you as many others have this false impression that QM only applies to the very small. This arises because the energy (transitions) involved are very small and therefore individually only affect very small particles. So an individual quantum energy effect (transition) can only affect a minute part of a (large) macroscopic object. However when lots of these small transitions all work together they can affect large objects. The effects include our everyday Physics so this if I push a large block of metal, it is all the small quantum effects working together that hold the block together so that it can move as a solid body under Newton's Laws. No esoteric Laws and effects are required. The whole of our macroscopic world works as it does because QM is the way it is. Hope this helps others as well. Season's Greetings to all.
45. 2 points

## Why are QM effects only found at sub-atomic levels?

Just another example but... https://en.wikipedia.org/wiki/Earnshaw's_theorem says that you can't have something stable and levitated in space by a magnetic field. And it should be correct. But, QM gives you a way round it. So things like this are macroscopic quantum observations which you can set up for yourself.
46. 2 points

## Why are QM effects only found at sub-atomic levels?

They aren’t. The premise of your question is false.
47. 2 points

## I realize everyone is probably isolating due to the virus, but I do hope everyone and

I realize everyone is probably isolating due to the virus, but I do hope everyone and their families have a very merry Christmas. Give thanks for what you have, be happy, and stay safe.
48. 2 points

## Banned/Suspended Users

DraftScience has been banned. Frankly, sports fans, he used a phrase that's a no-no with umpires.
49. 2 points

## Political Humor

A turtle gets mugged by two snails. When the cops show up, they ask him what happened, and the shaken turtle replies, "I don't know, it all happened so FAST!"
50. 2 points

## Political Humor

What’s funny is that neither of our last 2 posts are
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