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J.N. Thomas

@hypnagogue

Dad, husband, professor (math and CS), and researcher. Counter of angels on the heads of pins. Probing the intersection of mathematics, logic, language, and philosophy. Views are, for better or worse, mine alone.

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14.11.2024
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Latest posts by J.N. Thomas @hypnagogue

I really wish Sunny Day Real Estate could set aside their apparent hatred for each other long enough to release more than one new track every ten years.

24.02.2026 16:15 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I’m a college professor. As such, I don’t have much of a fear of public speaking at this point in my life. I am, however, pretty introverted.

Why does every extrovert seem to think they can wololo us into also being extroverts? I’m fine, big dawgβ€”I promise lol.

19.02.2026 18:20 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

When/if we ever build a Dyson sphere, mark my words--that fucking thing will just be boiling water.

09.02.2026 21:25 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

The place where I come from is a small town. They think so small, they use small words, but not me, I'm smarter than that. I worked it outβ€”I've been stretching my mouth to let those big words come right out.

07.02.2026 05:20 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Goddamn, @chess.com

03.02.2026 18:48 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Submitted an anonymous proposal to my department to teach a course titled "Vectors for Philosophers" and got an email the next day like "this was you weisberg right?"

02.02.2026 21:27 πŸ‘ 51 πŸ” 3 πŸ’¬ 7 πŸ“Œ 1
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09.01.2026 02:21 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Yes, JD. Let’s ask them if they think a stay at home mom, avowed Christian, and widow of a veteran deserved to be shot in the face and left to bleed out in her own car after dropping her 6-year-old off at school, for the crime of looking out for her neighbors. Let’s ask everyone running for office.

08.01.2026 20:27 πŸ‘ 27143 πŸ” 8390 πŸ’¬ 1476 πŸ“Œ 460

Definitely picking this one up.

08.01.2026 16:06 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

לא Χ‘Χ©ΧžΧ™Χ היא

28.12.2025 23:50 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I have been accustomed to a stubborn disposition that admits it wish its history disassembled.

28.12.2025 17:49 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

My grandmother was a Polish Jew born in 1932 and saw some "hard times" that I'm sure you can extrapolate. Did anyone else with family who went through these times pick up a lot of odd habits and/or behaviors you assumed were normal until you got older?

26.12.2025 23:01 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
The Biggest Breakthroughs in Mathematics: 2025
The Biggest Breakthroughs in Mathematics: 2025 YouTube video by Quanta Magazine

It was a big year for mathematics. youtu.be/hRpcWpAeWng

18.12.2025 20:18 πŸ‘ 47 πŸ” 18 πŸ’¬ 0 πŸ“Œ 2
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Unexpected email from Jonny Griffiths telling me there's a new 2026 update of his RISPS book, that's great investigations for impressionable A Level students. Download it now from www.risps.co.uk with links to Geogebra and Excel files
@jonny-griffiths.bsky.social

18.12.2025 21:58 πŸ‘ 30 πŸ” 11 πŸ’¬ 1 πŸ“Œ 1

I tend to avoid talking about having Crohn's because chronic illness is just one thing I have to navigate and not part of my personality, but I noticed the company who makes my new biologic is called Organon. As a logician, that was kind of a fun coincidence! Maybe it's a good omen.

16.12.2025 18:42 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Chabon’s novel The Yiddish Policeman’s Union (great book btw) has so much Hebrew and Yiddish slang that he included a glossary in the back.

16.12.2025 18:29 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

A few years ago my aunt threatened to revoke my Jew card because I hadn't seen Fiddler on the Roof (I still haven’t). I don’t like most musicals and 3.5 hours or whatever is more than I’m willing to commit to something I probably won’t like.

16.12.2025 18:29 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I’ve seen Schindler’s List and A Serious Man and I’ve read Michael Chabon novels. I feel that’s more than sufficient for my ethnically mandated media consumption.

16.12.2025 18:28 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Me to my friends (you know who you are, asshole) when they threaten to revoke my ethnic identity because I’ve never seen Eight Crazy Nights:

16.12.2025 17:22 πŸ‘ 0 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
Preview
a man in a suit and sweater is standing in a parking lot with a man in sunglasses behind him . ALT: a man in a suit and sweater is standing in a parking lot with a man in sunglasses behind him .

Me to my wife: β€œThat woman looks like she has her shit together.”

My four year old: β€œDaddy, do you have your shit together?”

11.12.2025 21:11 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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If a mass of incompressible fluid is floating in space, subject only to its own gravity and centrifugal force, what shape will it adopt as its angular momentum is increased?

Initially, it will form an oblate spheroid, with two equal semi-axes shorter than its axis of rotation.

11.12.2025 12:16 πŸ‘ 15 πŸ” 1 πŸ’¬ 3 πŸ“Œ 0

Correct. It's eschatology and that's all it's ever been. A bunch of ding dongs who think they're too special to die so this is the end times of their replacement religion.

10.12.2025 21:56 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

That's probably what people with legitimacy in funding, lol. I rotate between 4 active tapes so I at least have 4 "generations" back at any point. Integrity is good in general. If stored properly it will outlive us for sure, but you do only get so many write cycles before you should retire a tape.

09.12.2025 22:55 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Yeah! No problem. It's a rabbit hole for sure. I'm in academia now, but when I was a researcher in industry, the head of IT at one of the companies I worked at used tape storage and he'd regularly take the tapes to a bank vault somewhere. That's how I learned about it.

07.12.2025 18:42 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I have scripts I’ve written to automate reproducing the easily found media in case it’s ever lost. I didn’t see much point in using expensive tape storage for that stuff.

07.12.2025 15:08 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

In my use case, however, it’s great because I’m mostly making backups of research datasets, which are massive text files and text compresses extremely well. I do have a lot of personal media on my JBOD as well but I only back up the rare stuff and everything else is just catalogued.

07.12.2025 15:07 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

It varies by generation, but my drive is LTO-6 (I think LTO-9 is the current gen) so each tape holds 2.5TB by default but can store up to* 6.25TB compressed.

The β€œup to” is doing a lot of heavy lifting because that assumes everything compresses well and not everything does.

07.12.2025 15:05 πŸ‘ 1 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

I may have the most comprehensive set of tweets about #Qanon in existence. I scraped and catalogued (within guidelines at the time) every single mention across the standard hashtags and filtered them for quality. We’re talking many, many, MANY GB of this shit, just sitting in my JBOD and on tapes.

07.12.2025 04:15 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Not to mention gigantic datasets of tweets from before the Elon takeover I used in my grad school research that probably don’t exist anymore and I’m not sure what I can even legally with it since the TOS there are now completely fucked up.

07.12.2025 04:13 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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It’s not quite done, but I’m pretty happy with my progress on the 10” mini rack I designed and printed for my #homelab #server setup.

And yes. That is a tape drive lol. Part of my 3-2-1 backup strategy. I’m collecting a lot of data from cosmic radiation and #SDR and I don’t want to lose it.

07.12.2025 04:09 πŸ‘ 2 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0