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Cake day: August 16th, 2023

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  • willington@lemmy.dbzer0.comtoPrivacy@lemmy.mlGot annoyed by my gym
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    8 months ago

    The only thing I want that a gym might have is a pull up bar. Other than that, two kettlebells plus cals plus running give me more than enough challenge. Gymnastics rings on a long belt plus a sturdy tree branch can stand in for a pull up bar.

    Unless you are a pro and need access to a climbing gym, which is very hard to completely replace without a trip to a boulder, gyms are rip offs.

    I exercise on and off all my life, with at least 20 exercising years. I did college gyms, ymca, paid gyms, and once even a bona fide body building club with a proper hulking ph. d. as a trainer. I have plenty of experience with many modalities.

    My two cents, look into advanced cals, and running, and look up “dynamic tension” by Charles Atlas, and screw the gym. If you can, add some kettlebells and a pull up bar. With dynamic tension you can do pulling movements without a pull up bar.



  • www.popularmechanics.com

    Crows Are Self-Aware Just Like Humans, And They May Be as Smart as Gorillas

    Caroline Delbert

    5 - 6 minutes


    • In a 2020 study, crows performed a complex task that involved hundreds of firing sensory analytical neurons.
    • Crows can do jobs, share knowledge, and even ritualistically mourn their dead.
    • Recent research suggests crow brains tightly pack neurons to help make them smart.

    Crows are extremely intelligent. They can use tools to get what they want, like New Caledonian crows in a single South Pacific island of the same name, which shape twigs into hooks to catch grubs from rotting logs. And according to new research, crows are even smarter than we thought.

    ****Crows and other corvids (a family of birds that includes ravens and magpies) “know what they know and can ponder the content of their own minds,” according to a 2020 study in Science**. **This is considered a cornerstone of self-awareness and shared by just a handful of animal species beside humans, such as monkeys and great apes. Crows can also use their complex brains to find creative solutions, such as dropping nuts on the road so passing cars can crack them open, for example.

    But do they have true consciousness?

    Crows Have Brains Packed With Neurons

    The ability to think through a problem and work out an answer may be due to crows possessing a high number of brain cells that process information. This trait appears not only in humans, but in non-human primates, too. A study published in the Journal of Comparative Neurology in January 2022 comparing corvid brains with those of chickens, pigeons, and ostriches found that corvid brains have more tightly packed neurons—between 200 and 300 million neurons per hemisphere—enabling efficient communication between the brain cells. Crow intelligence is at least on par with some monkeys, and in fact, may be closer to that of great apes (like gorillas), according to a 2017 study published in Current Opinion in Behavioral Sciences.

    Evolution Gave Crows Great Ability to Reason

    In the 2020 study, scientists put crows through a series of puzzling tasks. The researchers measured neural activity in different kinds of neurons with the goal of tracking how crows were sensing and reasoning through their work. They sought to study a specific kind of thinking, called sensory consciousness, and they chose birds in particular as representative of a branching point in the evolutionary tree of life. The task is simple, but involves some high-level brain stuff, as described in the study:

    After the crow initiated a trial … a brief visual stimulus of variable intensity appeared… After a delay period, a rule cue informed the crow how to respond if it had seen or had not seen the stimulus. [A] red cue required a response for stimulus detection (“yes”), whereas a blue cue prohibited a response for stimulus detection.

    The researchers write that sensory consciousness is the ability to have subjective experiences that can be “explicitly accessed and thus reported,” and that it comes from brains that have evolved over time. Consciousness is associated primarily with the primate cerebral cortex. Bird brains are different, “since they diverged from the mammalian lineage 320 million years ago,” the researchers write.

    However, the crows performed in a way that affirms their sensory consciousness, which scientists in the 2020 study say could mean the “neural correlates of consciousness” date back to at least the last time birds and mammals shared that brain section:

    To reconcile sensory consciousness in birds and mammals, one scenario would postulate that birds and mammals inherited the trait of consciousness from their last-common ancestor. If true, this would date the evolution of consciousness back to at least 320 million years when reptiles and birds on the one hand, and mammals on the other hand, evolved from the last common stem-amniotic ancestor.

    In an analysis in the same issue of Science, another researcher, Suzana Herculano-Houzel of Vanderbilt University, makes a critique of the study’s hypothesis. The structure being studied, she says, could resemble another structure because of physical properties more than a shared evolution or an indication of extremely early consciousness. The size of the structures matter a great deal, too.

    “[T]he level of that complexity, and the extent to which new meanings and possibilities arise, should still scale with the number of units in the system,” Herculano-Houzel explains. “This would be analogous to the combined achievements of the human species when it consisted of just a few thousand individuals, versus the considerable achievements of 7 billion today.”

    Either way, crows have bird brains they can be proud of.

    Headshot of Caroline Delbert

    Caroline Delbert is a writer, avid reader, and contributing editor at Pop Mech. She’s also an enthusiast of just about everything. Her favorite topics include nuclear energy, cosmology, math of everyday things, and the philosophy of it all.

    This content is imported from OpenWeb. You may be able to find the same content in another format, or you may be able to find more information, at their web site.





  • A real war has risk for all the participants.

    Here you bear all the risk, and the counterparty, the internet company for example, bears no risk.

    If and when you create the risk for the counterparty, where no risk has existed before, then and only then do you have a right to call it a war. In other words you have to in some way threaten the counterparty and make good on those threats to be at war.


  • you never have the correct change

    As a result change accumulates. Every so often I bring it to my credit union and throw it into a machine and deposit it for free.

    oftentimes you get changed short

    It’s very rare and the mistakes sometimes happen in my favor.

    takes up too much space

    Not usually. Only when on occasion I need to process a lot of change at once is there a significant space requirement.

    you have to balance between not carrying too little and not carrying too much

    This is trivial. I never spend more than half a second on such a decision. Usually I know instantly what to bring.

    hard to track spending

    That’s a feature.

    i believe that we need the option to use cache in society

    I believe cache must remain legal tender and refusing to accept cache should result in a felony conviction plus one year imprisonment.

    That said, I would eliminate the penny and the nickel, and put the quarter on a serious diet. Then outlaw all the .99 and .95 type pricing. It might be OK to do away with the dime as well and only leave the largest coin in use.

    Privacy and the freedom from oversight by any large entity are non-negotiable.

    The only oversight I support is me doing oversight on you, and never someone else doing oversight on me. I am not a masochist.