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@hans_w Everything is an opinon. Even things we call "facts" are just our opinion as to what is true, a fact to one is fiction to another.

Do you know how to tell the difference between a Hippopotamus and a Hipperpotamus?

One has too little potamus and the other too much.

Imagine a ball (of uniform density) rolling on a horizontal plane without slipping. Due to its symmetry its angular speed in the reference frame of the plane will remain constant over time if it's not disturbed[1]. Its angular speed has three components. What I found surprising (but is obvious if we present it this way) is that by only nudging the ball horizontally you can't get it to spin around the vertical axis: so, horizontal nudges allow one to explore only a 2d subspace of the 3d space of the angular speeds.

tl;dr I got surprised by a consequence of the fact that while rotations around different axes do not commute, infinitisemal rotations (and thus angular speeds) do commute.

[1] If its density was not symmetric, it could undergo precession and nutation.

@icedquinn

The quote actually originated with Rutherford and was later repeated in another form by Einstein, feynman adopted it as a technique.

Rutherford said "it should be possible to explain the laws of physics to a barmaid."

Einstein said, while referencing Rutherford in a conversation with de Broglie in france: "that all physical theories, their mathematical expressions apart ought to lend themselves to so simple a description that even a child could understand them."

So Einstein coined the phrase and idea in reference to a child.

The Feynman technique was explicitly inspired by Einstein and is a 4 step technique:

1) Pick the subject of interest
2) explain the concept as if to a 6th grader
3) Identify the holes in your understanding
4) Study the parts you couldnt explain simply

While the Feynman technique is based off observations in Feynmans study habits he never taught the technique formally nor did he define it.

@lucifargundam @TechUr

This quote I wrote in copperplate a few weeks ago is still ringing in my head. Leave it to Einstein to leave me thinking off such a simple idea.

@vital876@mastodon.social Try the Pennsylvania dutch birch beer. It is the best!

@freemo If you like bass, you'll love Geoff.

youtube.com/c/GeoffCastellucci

Here's his channel, and prepare your anus. The strength of his base and reverb has been known to cause involuntary bowel movements😂

@louisrcouture

Yea I have, A&W isnt bad, but nothing comes close to pennsylvania dutch birch beer.

@lavaender

World War I German military bicycle brought from Germany in Tanganyika, present day Tanzania, which was used by German's soldiers to engage British's soldiers in Kenya.

German machine still intact, I need something like this today.

@freemo hit the 17 mark guess I'll reach 20 in like 3 months

@vital876@mastodon.social

You can read about it here. It was mostly rewritten to have children characters and the language was simpler.

scarystudies.com/the-girl-with

@General

@realcaseyrollins I agree its a poor argument, i mean your brain is just a clump of cells too. That said "its alive and its human" seems like a poor argument to me too, human cancer is alive and human but obviously thats fine to kill.

For me the argument comes down to if it can think, on any level, feel pain, suffer, feel. If it has a brain, even a far undeveloped one, and those neurons are sending signals, then the line has been crossed.

@hector That depends, anywhere from the same to higher. But they tend to spend their tax money in more useful ways so you will find cleaner cities, better transportation, etc.

@hector Actually for most countries their taxes on the upper class are similar to the USA, its only their taxes on the lower class thqat is significantly higher.

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