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Stated Clearly - Jon Perry
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Stated Clearly - Jon Perry
@StatedClearly
I teach biology via animations. #evolution #genetics #biochemistry
Earth Katılım Haziran 2012
1.3K Takip Edilen4.6K Takipçiler
@GravityAllen It's easy for scientists to trick themselves, yes, but nature keeps perfect, unrelenting track of the math.
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@StatedClearly And so we can’t ever truly know what’s been selected for (and why).
I’m probably not fully doing the objection justice. But, then, I’m not sure how much justice can be done either.
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@GravityAllen Yes, lots of cases! In evolutionary trees there are many ways nature hides true relationships, one is Incomplete Lineage Sorting. When we have multiple likely trees, we use the rule of parsimony to choose the best one, but there can be many that are equally likely.
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@StatedClearly Thought of this question during the premiere, but chat space was limited:
Are there cases where we really can’t choose between 2 or more plausible hypotheses for why a trait originally evolved? Like, the evidence we’d use to decide is lost to history? Or can we alsways guess?
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there’s an entirely different world out there that birds get to experience
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Here, veteran Brian McGinnis' forearm snaps as he's pulled from the room while protesting war.
In most mammals the forearm has 2 long bones: Radius & Ulna. Brian suffered both breaking.
Evolution fact: In horses the ulna & radius have fused, sacrificing rotation for stability.
Matt Wallace@MattWallace888
I slowed it down so you can see how bad that was. His arm is definitely broken! A Marine was pulled out of the hearing after protesting US involvement in the Israel/Iran war, and was severely hurt in the process.
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Today at 5pm eastern, the second episode in my flagella evolution series goes live!
We take a slight detour to learn about the Darwin fish.
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@CapturingChrist @ThoughtfulSaint Or there's China's Hong Xiuquan. Look that dude up! His Christian movement (in name, not deed) started a war that killed 30 million people and is sometimes said to have been the beginning to the end of the Qing dynasty (which ended a few decades later).
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@ThoughtfulSaint Isn't Martin Luther a more influential religious figure? Way more Protestants than Mormons.
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Even if Joseph was a fraud he demonstrably was a better author than twain.
What Joseph produced in purely literary terms has been more widely read changed the lives of tens of millions around the world.
Twain may have laughed but he will be forgotten long before Joseph Smith who is even from a secular perspective the most influential religious figure of the past 1000 years.
Zac@OchoZaco
Mark Twain had a way with words. “The Book of Mormon is chloroform in print” “It was an insipid mess of inspiration” “If Joseph Smith composed this book it was a miracle - keeping awake while he did it” “It’s literally anesthesia”
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I just found this really cool paper where functional proteins are selected from random sequence space: pubmed.ncbi.nlm.nih.gov/11287961/
It's easier to do than I thought it would be.
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AI is cool and all... but a new paper in @ScienceMagazine kind of figured out the origin of life?
The paper reports the discovery of a simple 45-nucleotide RNA molecule that can perfectly copy itself.
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How did bacteria flagella evolve? Happy Darwin day! youtu.be/eFC9VzexRUk
@smartereveryday
Big thanks to Destin for sending out these lovely questions.
YouTube
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Impossible to overstate the degree to which the US right wing is an insane death cult. It must be dismantled.
AF Post@AFpost
Candace Owens said that Charlie Kirk spoke to her about his “third eye,” claimed that “street lamps” would switch off as he ran, and described their mutual ability to “astral project.” Follow: @AFpost
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Stated Clearly - Jon Perry retweetledi
マグロの尾の付け根付近にある黄色い三角形の突起は小離鰭（しょうりき）と呼ばれるヒレの一種です。 これが動く理由は高速で泳ぐための整流効果にあります。
海の弾丸と呼ばれるマグロが、時速100km近いスピードで泳ぐための、最新鋭の航空機のようなハイテクな装置ですね！
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Awww! Dr Lemma gives us an interesting science fact AND a cool video.
Notice how easily the horse could tell the difference between a pat on the back and similar tap on the neck that was a signal to wake up. These two must be old friends!
Dr. Lemma@DoctorLemma
Horses possess a remarkable anatomical feature called the “stay apparatus,” a system of tendons and ligaments that locks their leg joints in place, allowing them to doze while standing. This evolutionary adaptation means they can bolt from danger in an instant if threatened. But standing sleep has limits. To enter REM sleep, the deep, restorative phase where the brain dreams and the muscles go slack, horses must lie down completely. In this position, they’re defenseless. They cannot flee. They are exposed to predators. So they only do it when they feel absolutely safe. If a horse lies flat in your presence, stretched out and still, it’s offering you something profound: its trust.
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My thesis has been published! 🐜 🎉
Not sure if anyone is still interested, but my inexplicably controversial PhD thesis ‘The Evolution of Cooperation and Division of Labour in Insects’ is now available online 😊
ora.ox.ac.uk/objects/uuid:1…
It’s around 4 years worth of research, so there’s a lot in there, but I’ll give an overview in the thread below:
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