Joe
15K posts

Joe
@MinuteComedy
most arguments on here are just different versions of 'why do you hate waffles?'
USA Bergabung Şubat 2020
269 Mengikuti278 Pengikut

Elon Musk just weaponized gravity.
The entire trucking industry has a physics leak bleeding billions.
Musk just sealed it.
Most people look at the Tesla Semi and see a cleaner diesel. A truck that swapped a gas tank for a battery.
That is a complete misread of the physics.
Musk: “Let’s say you’re going over a mountain range. In a diesel truck, you actually don’t capture the energy of height or potential energy.”
For a century, freight has fought gravity twice on every mountain.
A diesel truck burns thousands of dollars in fuel clawing its way to the peak. It arrives at the summit loaded with enormous gravitational potential energy.
And what does it do with that energy?
It throws it away as heat.
Musk: “You have to actually spend a lot of money on expensive brakes going down the other side so you don’t run out of control.”
Diesel burns twice.
Fuel going up. Hardware coming down.
A century of logistics, and the descent was never anything but a cost to be survived.
The Tesla Semi doesn’t survive the descent.
It harvests it.
Musk: “An electric semi truck is able to recapture the gravitational potential energy and in fact puts the energy back in the pack.”
Regenerative braking doesn’t just slow the truck. It converts 80,000 pounds of downhill momentum into raw electricity flowing back into the battery.
The mountain stops being an obstacle.
It becomes a power plant.
Here is the thermodynamic reality the market is missing.
Diesel is closed on the descent. There is no version of a combustion engine that turns downhill momentum back into liquid fuel. It is structurally impossible.
Electric is open in both directions. The same system that spends energy to climb gets paid on the way down.
Wall Street keeps pricing the Tesla Semi on a cost-per-mile comparison. Kilowatts versus gallons.
They are solving the wrong equation.
You cannot win a price war against a machine that bills the planet for its own fuel.
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@burackbobby_ "At least they're using the pic of me where my cans look amaze." - DR
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I talked to a dozen media sources on background about the Dianna Russini scandal.
Biggest observation: most people had their minds made up about her before the photos with Vrabel.
Here's what I've heard:
outkick.com/analysis/what-…
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Joe me-retweet

@ExploreCosmos_ Where and when does this entanglement take place that makes it more fundamental than spacetime?
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For a long time, we’ve treated gravity as one of the fundamental forces of nature. Something built into the fabric of reality itself, alongside electromagnetism and the nuclear forces.
It curves spacetime, governs the motion of planets, shapes galaxies, and dictates the large scale structure of the universe.
But what if that picture is incomplete?
What if gravity isn’t fundamental at all?
In physics, we’ve seen this kind of shift before. Temperature feels like a basic property of matter, but it isn’t. It emerges from the collective motion of microscopic particles. Pressure, too, is not fundamental. It arises from countless interactions at smaller scales.
In that sense, what we perceive as a smooth, continuous phenomenon is often the result of something deeper and more discrete.
Some physicists have wondered whether gravity might be similar.
This idea is known as emergent gravity. Instead of being a fundamental interaction, gravity could arise from underlying microscopic degrees of freedom. In some approaches, those degrees of freedom are tied to quantum information and entanglement, suggesting that spacetime itself may be built from how information is organized at the most fundamental level.
One of the key clues comes from black holes.
Black holes are not just gravitational objects. They also have temperature and entropy. Their entropy is proportional to the area of their event horizon, not their volume.
That’s a surprising result.
It suggests that the fundamental description of reality might live on lower dimensional boundaries, an idea closely related to the holographic principle.
There are even deeper proposals. In some frameworks, connections between regions of spacetime may be related to quantum entanglement itself, an idea often summarized as ER = EPR.
In that picture, spacetime is not just a stage where physics happens. It could be something that emerges from entanglement.
Even more intriguingly, when you combine quantum theory, thermodynamics, and relativity, equations resembling Einstein’s field equations can be derived as emergent relations, not as fundamental laws. In this view, spacetime geometry, and therefore gravity, would be more like an equation of state than a basic ingredient.
So gravity wouldn’t be “causing” motion in the traditional sense. It would be the macroscopic manifestation of deeper microscopic processes.
There are also attempts to connect this idea to cosmology. Some versions of emergent gravity try to explain phenomena usually attributed to dark matter by modifying how gravity behaves on large scales, without introducing new particles. These models are still debated, and they don’t yet match all observations as well as the standard picture, but they highlight how much we still don’t know.
The challenge is that we don’t yet have a complete underlying theory.
If gravity is emergent, what is it emerging from? What are the fundamental degrees of freedom? How do they give rise to spacetime itself?
Right now, those questions are open.
And that’s what makes the idea so compelling.
Because it shifts the question. Instead of asking how gravity works, we start asking why it exists at all, and whether what we call gravity is just the large scale shadow of something deeper.
If that’s true, then spacetime itself may not be fundamental.
And what we experience as the curvature of the universe might be closer to a thermodynamic illusion than a basic feature of reality.
But like wind, which emerges from the motion of air molecules yet is undeniably real, an emergent phenomenon is not less real, only less fundamental.

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Lots of righteousness and indignation. Not included: pics of the gals hiking in Sedona.
Dianna Russini@DMRussini
I submitted my letter of resignation to The Athletic. Everything I have to say about it is below.
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Yes, everyone knows gravity is very well modeled with general relativity as the curvature of 4D spacetime which is why large masses appear to cause an attractive force at a distance despite all objects simply following their straightest possible path on a curved spacetime - their geodisic - but also that GR produces a singularity at the big bang and inside black holes which causes some to think GR is incomplete which is interesting because most of those same people are willing to believe that the universe's matter is 85% invisible just to keep GR consistent on the galactic scale despite no evidence of such a thing (aside from GR simply not working), and meanwhile there’s also no complete quantum theory of gravity which may be the holy grail of physics or an impossibility or a completely misguided idea based on wrong assumptions that will one day look obvious, ya know?
Freedomain - with Stefan Molyneux, MA@StefanMolyneux
I think we can be pretty sure about gravity though
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@JoeAlderman11 @Hitchslap1 It's better for quacks to have a voice than to be silenced.
If people make wrong assertions, they get corrected... in public. This is important.
Silencing dissenters seems appropriate until we realize running from lies only gives them more power.
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@Hitchslap1 Depends totally on the field. In my field people wouldn’t even know the questions to ask! (I am in a very, very specific specialty form of biology.)
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@DrBrianKeating It looks very self-important but that's probably just me thinking that I'm important... which I am... BUT STILL!
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@MattBraynard Definitions changing based on common usage and definitions changing based on collaborative efforts to change social structures and deny biological reality are 2 different things. Hope this helps.
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I have a whole bunch of midwits in my comments pointing out modern dictionary definitions, not recognizing that modern dictionaries bow to the masses, IE if enough people start misusing a word, the postmodernist liberals will change the definition.
So take a look at the definition for "woman" in the Cambridge dictionary and then tell me that's what should be an authority for the meaning of words.

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The idea that god would wait 13 billion years (universe start) or even 4.5 billion years (earth formation) or even 8 million years (human ancestor identified) or even 300,000 years (modern human identified) before he sent himself down in the guise of his son to be brutally murdered to forgive himself for misdemeanours against himself is too ridiculous to be believed in the 21st century.
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Lots of people are biweekly-curious
Merriam-Webster@MerriamWebster
We have a standing meeting about this word twice a week every two weeks.
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Skip, Colin, Nick
Fastbreak Hoops@FastbreakHoops5
If you had to silence 3 mics forever, who are you choosing?
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Let's be clear: Red Lobster went bankrupt after private equity bought the chain, loaded it up with debt, and gutted it.
unusual_whales@unusual_whales
"Red Lobster to bring back endless shrimp that brought it to bankruptcy," per Bloomberg
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