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David Petersen

@calcdave.bsky.social

A fisher of minds in central Ohio

389 Followers  |  442 Following  |  120 Posts  |  Joined: 15.01.2024  |  2.3585

Latest posts by calcdave.bsky.social on Bluesky

You're saying you were FRAMED at the Louvre? Who ART thou?

19.10.2025 11:31 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Everytime I have a bad day, it turns out that I woke up that morning.

16.10.2025 23:34 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Joseph Barranco posted on social media: Go Bears! Nobel Prize in Physics goes to 3 physicists studying mesoscopic quantum phenomena... Work was done in the 1980s in UC Berkeley Professor John Clarke's lab with his graduate student John Martinis and postdoctoral fellow Michel Devoret... all 3 share the Nobel Prize.  Must also point out that both Clarke and Devoret are immigrants from the UK and France, respectively.  All 3 are pioneers in the race to build the most powerful quantum supercomputers.  California *public* education made this happen. Immigration made this happen.

Joseph Barranco posted on social media: Go Bears! Nobel Prize in Physics goes to 3 physicists studying mesoscopic quantum phenomena... Work was done in the 1980s in UC Berkeley Professor John Clarke's lab with his graduate student John Martinis and postdoctoral fellow Michel Devoret... all 3 share the Nobel Prize. Must also point out that both Clarke and Devoret are immigrants from the UK and France, respectively. All 3 are pioneers in the race to build the most powerful quantum supercomputers. California *public* education made this happen. Immigration made this happen.

Valuable info about the Physics Nobel Prize today from Prof. Joseph Barranco at SFSU on Martinis and Devoret being a grad student and postdoc in Clarke's lab at UC Berkeley & Clark and Devoret being immigrants. "California *public* education made this happen. Immigration made this happen." βš›οΈ

07.10.2025 17:53 β€” πŸ‘ 396    πŸ” 131    πŸ’¬ 2    πŸ“Œ 8

@alliegoertz.bsky.social Matt Groening gave you a quick mention on today's WTF interview about how you were his first podcast even though he'd promised Maron. But, your interview was better

06.10.2025 16:46 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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a man with a mustache is talking to a woman with a knife . Alt: a man with a mustache is talking to a woman with a knife .

Because they're Cobra Kai

30.09.2025 16:49 β€” πŸ‘ 9    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

When we were in San Juan this summer, our Uber driver took us past the Paseo de los Presidentes and he said that it stopped at Obama. I told him that was enough and they didn't need to add any more.

29.09.2025 18:01 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The distance between Neptune and the Sun correlates with Burglary rates in the US (r=0.969)

27.09.2025 13:33 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 1
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The gap between teacher pay and other college graduates’ pay is the highest it’s been in over four decades.

Is there a β€œteacher shortage,” or a shortage of jobs that treat educators with the pay, dignity, and support they deserve?

24.09.2025 23:00 β€” πŸ‘ 1816    πŸ” 529    πŸ’¬ 80    πŸ“Œ 35

The SEVENTH president (Andrew Jackson) was elected TWICE, the first time in 1828. The angles of an isosceles right triangle are 45, 90, 45 and Michael Jordan was number 23.

2.71828182845904523...

13.09.2025 14:48 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The Ryan Secret Pals Club Fun stuff from author Ryan North, including SECRETS and also SURPRISES

I am one of those 5000 and you could be, too! secretpals.beehiiv.com/subscribe

22.08.2025 14:05 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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a man laying on a bed with the words " to the pain " on the screen Alt: a man laying on a bed with the words " to the pain " on the screen

"Your ears you keep!"

16.08.2025 20:30 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

A key difference here is that while either can be incorrect, the structure of Wikipedia *creates context* and the structure of LLMs *destroys context*

Wikipedia has linked sources and an edit history showing where information came from and who added it when

An LLM just generates text

26.04.2025 18:39 β€” πŸ‘ 4040    πŸ” 1227    πŸ’¬ 61    πŸ“Œ 37

This does assume that each pair is symmetric, though. But, like, I know someone like Taylor Swift, but she wouldn't know me.

13.08.2025 18:16 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

πŸ‘€

13.08.2025 18:06 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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RFK Jr. in interview with Scripps News: β€˜Trusting the experts is not science’ HHS Secretary RFK Jr. sat down with Scripps News for a wide-ranging interview, discussing mRNA vaccine funding policy changes and a recent shooting at the Centers for Disease Control and Prevention.

1. "'Trusting the experts is not a feature of either a science or democracy," Kennedy said."

It's literally a vital feature of both science and of representative democracy.

I've written a fair bit about trust in expertise as a vital mechanism in the collective epistemology of science.

12.08.2025 04:48 β€” πŸ‘ 10009    πŸ” 2863    πŸ’¬ 539    πŸ“Œ 481

@k8nowak.bsky.social xkcd.com/3126/

08.08.2025 19:36 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

If we could just believe women, we wouldn't need the files released.

06.08.2025 19:16 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Black men wearing boards that say "I AM A MAN" walking past US soldiers pointing bayonettes at them.

Black men wearing boards that say "I AM A MAN" walking past US soldiers pointing bayonettes at them.

01.08.2025 21:53 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

If you finish a video or some social media and you are left feeling angry or smug, make sure you analyze your reasons and question the media you just consumed. -- @escapethispodcast.bsky.social

23.07.2025 21:34 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

And rewound music using a pencil

12.07.2025 02:27 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Entering a bank with a Victoria's Secret bag and shouting it's a C cup.

02.07.2025 16:34 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Girl pointing out parts of building she made with blue blocks usually used to represent place values in match education

Girl pointing out parts of building she made with blue blocks usually used to represent place values in match education

Photo for reference

23.06.2025 13:05 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Text message bubbles reading: "Alice is still building a house/furniture/people with the blue blocks. And part of me wants to say 'these are for math, you're doing it wrong' but then she'll say stuff like 'this tv is huge it's...counts number of 10 sticks...sixty blocks!' Or 'these people are tiny. they're only 3 blocks tall. Wait, no, they're TWO blocks TALL, but they're made of three blocks. And I guess this is how she's going to learn match and I should just roll with it."

Text message bubbles reading: "Alice is still building a house/furniture/people with the blue blocks. And part of me wants to say 'these are for math, you're doing it wrong' but then she'll say stuff like 'this tv is huge it's...counts number of 10 sticks...sixty blocks!' Or 'these people are tiny. they're only 3 blocks tall. Wait, no, they're TWO blocks TALL, but they're made of three blocks. And I guess this is how she's going to learn match and I should just roll with it."

@triangleman.bsky.social Message from my wife while I work this morning.

23.06.2025 12:29 β€” πŸ‘ 10    πŸ” 0    πŸ’¬ 1    πŸ“Œ 2

Yeah, I mean, I get the math and numbers bits. But thinking about what it FEELS like is still a bit vague to me. Similar to how I don't really have a sense of 1 atmosphere of pressure because I live under that all the time.

13.06.2025 21:58 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

So this is about the force your hand has to exert to keep the apple from falling, right? Which is still not intuitive to me because I think I am accounting for exerting to keep my hand up, too. What about like pushing/pulling? A light shove? Enough to tip over...something? Or get something rolling?

13.06.2025 19:20 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

@rhettallain.bsky.social Hi, Rhett! Do you (or the physics community) have a standard example of what 1 Newton feels like? Like Wikipedia has that the force of gravity on an apple is about 2N, but that's still not too intuitive to me. So maybe how hard you'd have to push something common?

12.06.2025 21:32 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 4    πŸ“Œ 0

I think of 20% as 1/5, but I'd rather do 1/5 of 25 than 24. 1/5 of 25 is 5, and 25-5=20, so I'm expecting an answer a little less than $20 (which IRL is enough. I'd pay with a $20 bill). But if it's important to go further, then 1/5 of $1 is 20 cents, so instead of $5 it's $4.80 off. 24-4.8=$19.20

09.06.2025 13:59 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Usually it's the first 2 panels that make a good business card, but in today's comic it's the last panel that I want.

09.06.2025 12:34 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Better off dew'd.

04.06.2025 15:18 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Similar to riddles and lateral thinking puzzles

02.06.2025 23:31 β€” πŸ‘ 6    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

@calcdave is following 20 prominent accounts