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Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ

@shallit.bsky.social

Grumpy old American mathematician and computer scientist, now retired. My Erdรถs number equals 1.

created February 12, 2024

829 followers 846 following 1,568 posts

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Posts

Profile picture David Slack (@slack2thefuture.bsky.social) reposted

Tulsi Gabbard is *very obviously* a foreign intelligence asset and I hope we all live long enough to see her tried and convicted for it.

1/9/2025, 12:14:45 AM | 2987 902 | View on Bluesky | view

Profile picture Gabriel Malor (@gabrielmalor.bsky.social) reposted

Reminder: the apparent plan was to spirit these children away in the middle of the night without them ever seeing the inside of a courtroom to challenge their deportation. Children.

1/9/2025, 5:23:10 AM | 1667 579 | View on Bluesky | view

Profile picture Philip Gourevitch (@pgourevitch.bsky.social) reposted

That Trump and Trumpism are fascist doesnโ€™t explain the sheer vandalism of unleashing mass murdering mayhem via RFK to replace medical/scientific institutions of immense value and prestige with medieval peasant superstitions. That is a criminal madness facilitated by but above and beyond fascism.

30/8/2025, 9:27:57 PM | 4548 1149 | View on Bluesky | view

Profile picture Kevin M. Kruse (@kevinmkruse.bsky.social) reposted

Pure fucking evil. Everyone involved in this shit needs to be held accountable.

31/8/2025, 7:08:22 PM | 5511 1476 | View on Bluesky | view

Profile picture Dr. Lucky Tran (@luckytran.com) reposted

New Mexico has issued a public health order that removes federal restrictions to COVID-19 vaccine access so that pharmacies in New Mexico can vaccinate people of all ages and risk profiles. Every state need to do this!

PUBLIC HEALTH ORDER NEW MEXICO DEPARTMENT OF HEALTH SECRETARY GINA DEBLASSIE AUGUST 29, 2025 Ensuring Availability of COVID-19 Vaccine for the 2025-2026 Season THIS ORDER supersedes any previous order, proclamation, or directives to the extent they are in conflict. This Public Order shall take effect immediately and remain in effect until such time as it automatically expires one year from the date of issuance, or until such time as the New Mexico Department of Health Cabinet Secretary rescinds it.
31/8/2025, 5:04:38 PM | 27018 8316 | View on Bluesky | view

Profile picture Joshua J. Friedman (@joshuajfriedman.com) reposted reply parent

Judge: I got a call at 2:36 a.m. because the govt chose this time on a holiday weekend to execute this plan. I have been up since then. I haven't been able to reach anyone from govt until this morning at 9:30 a.m. So absent this intervention, all children would already have been sent to Guatemala!

31/8/2025, 5:55:12 PM | 1080 334 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Google's AI searches are now largely useless because they use a very dumbed-down version of Gemini. If you're going to complain about AI, at least complain about a decent LLM.

31/8/2025, 12:46:25 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

On the other hand, if we ever discover intelligent alien life very different from ours, our communication would likely be largely restricted to text, at least initially. And yet we could learn from it and it from us.

31/8/2025, 12:41:33 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

I'm not sure it's the anthropomorphizing that is really the issue. After all, we are accustomed to attributing desire and agency to all sorts of objects in our world: "the car wants gas", "the TV needs to be plugged in", "my computer is complaining that it's running out of storage", and so forth.

31/8/2025, 12:39:15 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

I think this can be remedied, at least in part, by explaining clearly what their limitations are, currently. For example, I'm happy to use ChatGPT to help me locate obscure references in the literature provided I can double-check the result. But I would never use it to give me relationship advice.

31/8/2025, 12:37:19 PM | 0 0 | View on Bluesky | view

Profile picture The Bulwark (@thebulwark.com) reposted

"She did not die defending the Constitution. She died trying to overturn it. She was not protecting lives at a gate in Iraq; she was forcing her way through windows in the Capitol to stop the peaceful transfer of power." New from @markhertling.bsky.social:

30/8/2025, 2:56:35 PM | 19712 6348 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Not that much different from an academic conference, then.

30/8/2025, 6:01:01 PM | 6 1 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

And you're not actually persuading people, either. You're just controlling your breathing and tongue and lips to cause sounds to emanate from your piehole, which then are interpreted by the brains of others into words and sentences that cause changes in their cerebral cortex.

30/8/2025, 4:23:51 PM | 1 0 | View on Bluesky | view

Profile picture Jason Garcia (@jasongarcia.bsky.social) reposted

The Free State of Florida is now trying to ban *sidewalk chalking*

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30/8/2025, 2:21:26 PM | 8982 2458 | View on Bluesky | view

Profile picture Prof Gavin Yamey (@gavinyamey.bsky.social) reposted

Itโ€™s a genuine tragedy for our nationโ€™s health that Marty Makary has 100% embraced RFK Jrโ€™s anti-vaxx activism (as documented here: www.statnews.com/2025/04/29/f...). Makary and Bhattacharya are merely MAHA/MAGA foot soldiers, such as pushing the worst kinds of anti-vaxx & anti-LGBT hatred ๐Ÿคฌ

30/8/2025, 2:45:41 PM | 30 8 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Political affiliation is not transmitted genetically, you silly dolt.

30/8/2025, 10:13:16 AM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Roughly the same as the entire population of Corvallis, Oregon, or Rome, Georgia.

29/8/2025, 9:17:15 PM | 0 0 | View on Bluesky | view

Profile picture Kathleen Bachynski (@bachynski.bsky.social) reposted

Iโ€™m so grateful that I have tenure and the academic freedom to call it like I see it. โ€œDr. Kathleen Bachynski, a professor of public health at Muhlenberg College, described Kennedyโ€™s comments as โ€œabsolute gibberishโ€ and slammed the HHS secretary as a โ€œdangerous buffoonโ€ who is โ€œthreatening us all.โ€

29/8/2025, 7:53:46 PM | 2902 812 | View on Bluesky | view

Profile picture Michelle Cohen (@docmcohen.medsky.social) reposted

He rose to power through crying about censorship from the medical establishment. And now Vinay Prasad is spending his time as an FDA official censoring his critics.

29/8/2025, 8:07:34 PM | 401 130 | View on Bluesky | view

Profile picture Wendy Orent (@wendyorent.bsky.social) reposted

And heโ€™s proving to be as horrible, as describe to public health, as unstoppable as a battering ram swung by a medieval army. We donโ€™t get rid of Bobby, weโ€™ll be dealing with the repercussions for years or decades. He must be impeached.

29/8/2025, 4:02:33 AM | 15 5 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

No responsible or knowledgeable person can be allowed to work for the deranged fascists. Positions in the government are for corrupt toadies only now.

27/8/2025, 9:33:31 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Just imagine that people buy and sell riding horses even though - we have no idea how horses think - we can't predict their behavior - we can't completely control them and - they cause dozens of deaths every year. Crazy!

27/8/2025, 3:13:19 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Translation: "I am not good at my job."

26/8/2025, 8:35:16 PM | 2 0 | View on Bluesky | view

Profile picture David Corn (@davidcorn.bsky.social) reposted

Stalin could only have dreamed of having such toadies.

26/8/2025, 6:37:01 PM | 3432 681 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Good gawd, the degree of sucking-up-ness that this deranged orange tyrant requires is really nauseating.

26/8/2025, 6:00:29 PM | 3 0 | View on Bluesky | view

Profile picture Flint Dibble (@flintdibble.bsky.social) reposted

Many people say Graham Hancock inspires interest in archaeology. But his fans hate archaeologists who try to correct the record In fact, it's the opposite. Hancock and his buddies inspire interest in fantasy, a fantasy opposed to actual archaeology and our human past

26/8/2025, 2:41:58 PM | 223 26 | View on Bluesky | view

Profile picture American Oversight (@weareoversight.bsky.social) reposted

NEW LAWSUIT: Weโ€™re suing the Department of the Interior and the National Park Service for records related to Trumpโ€™s politicized use of federal power โ€“ from immigration enforcement to the unprecedented federalization of D.C.โ€™s police force. americanoversight.org/american-ove...

26/8/2025, 2:45:07 PM | 20 11 | View on Bluesky | view

Profile picture Max Kennerly (@maxkennerly.bsky.social) reposted

Correct. The default Dem position has to be, "I will fire everyone Trump appointed, and everyone hired by anyone Trump appointed, regardless of what any statute or court says." Anything less is a ratification of Trump's actions that leaves the government broken and filled with saboteurs.

26/8/2025, 10:49:00 AM | 1542 388 | View on Bluesky | view

Profile picture Mark Copelovitch (@mcopelov.bsky.social) reposted

Among all the other things, "The President has screwed things up so badly that the world's other rich countries won't deliver mail to us anymore" really should end it immediately.

26/8/2025, 4:21:42 AM | 8880 2805 | View on Bluesky | view

Profile picture Acyn (@acyn.bsky.social) reposted

Pritzker: To the members of the press who are assembled here today and listening across the country, I am asking for your courage to tell it like it is. This is not a time to pretend here that there are two sides to this story.

25/8/2025, 8:55:07 PM | 56270 17780 | View on Bluesky | view

Profile picture Ryan Enos (@ryanenos.bsky.social) reposted

www.doomsdayscenario.co/p/america-ti...

25/8/2025, 9:12:45 PM | 25 9 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Look out for "delve" and "leverage"!

25/8/2025, 8:29:20 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

The article literally says they are filing a lawsuit.

25/8/2025, 8:08:30 PM | 4 0 | View on Bluesky | view

Profile picture Michael Clemens (@mclem.org) reposted

The US Administration is now deleting its internal communications, in brazen violation of the Federal Records Act, in order to conceal its other illegal acts. Those entrusted to enforce our Congressโ€™s laws sit, simply watching this happen, flaccid and impotent.

23/8/2025, 4:36:31 PM | 4681 2464 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Translation: "I hate being criticized by people who point out my tedious, crappy writing, and the flaws in my reasoning."

23/8/2025, 10:05:20 PM | 1 0 | View on Bluesky | view

Profile picture David Roberts (@volts.wtf) reposted reply parent

They are vaccine skeptics because they are dumb, selfish people who were eager to believe lies that give them permission to be dumb & selfish, and there is a vast propaganda machine designed to provide those lies. They did it. They are responsible for it. It's on them.

23/8/2025, 8:35:02 PM | 1130 193 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Thanks for writing it, but too bad you chose such a laughably incompetent outfit like The Atlantic to publish it in.

23/8/2025, 8:29:10 PM | 1 1 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Your comment was "Computers ONLY "spit out" what they are programmed to do. "Garbage in, garbage out."" As I said, this is a common delusion of people untrained in the theory of computation.

21/8/2025, 9:08:20 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

It was completely anodyne. There were so many better examples!

21/8/2025, 7:57:13 PM | 1 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Another person that deserves to be completely shunned, but is not, is Dinesh D'Souza. When I taught at Dartmouth he was involved in outing gay students to their parents. Later he moved on to campaign finance fraud and spreading lies for bucks. Despite this record, he still gets interviewed.

21/8/2025, 7:50:28 PM | 2 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

In this reply you did not actually address either of your two mistakes.

21/8/2025, 7:47:51 PM | 0 0 | View on Bluesky | view

Profile picture Atticus Finch (of Georgia) (@atticus59914029.bsky.social) reposted

This is so, so bad. We have reached the point of the president's supporters calling other human beings cockroaches. It is making me lose my mind that evangelical Christians support this.

21/8/2025, 7:40:36 PM | 1067 274 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Classic blunder of people who know nothing about the theory of computation. Two mistakes: computers can rely on sources of truly random numbers (e.g., radioactive decay). And even completely deterministic procedures can have outputs difficult to predict and hence feasibly equivalent to random.

21/8/2025, 9:43:19 AM | 1 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social)

What accounts for this huge rise? Use in a movie or book?

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21/8/2025, 9:09:31 AM | 1 0 | View on Bluesky | view

Profile picture Tom Coates (@tomcoates.bsky.social) reposted

This is fucking terrifying. Genuinely truly terrifying. Whatโ€™s their scheme? To prosecute parents? Doctors? To take peopleโ€™s treatments away? Absolutely no way this can end well.

21/8/2025, 4:19:19 AM | 871 292 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

As Frances Crick wrote, "Philosophers have had such a poor record over the last two thousand years that they would do better to show a certain modesty rather than the lofty superiority that they usually display."

21/8/2025, 9:01:06 AM | 2 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

I can't think of a worse idea than this. My experience is that philosophers have little understanding of basic knowledge such as the theory of computation, and hence come to wildly wrong conclusions about AI. 1/2

21/8/2025, 9:01:06 AM | 1 0 | View on Bluesky | view

Profile picture Marc Elias (@marcelias.bsky.social) reposted

Absolutely disgraceful and despicable. If you are a partner at Paul Weiss or Kirkland & Ellis you should be ashamed of yourself -- that is, if you had any shame left.

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21/8/2025, 12:36:21 AM | 13674 4564 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

For example, consider Berkeley law professor John Yoo, who justified the use of torture under Bush. I would love it if everyone where he went, people booed him or walked out of the room, children pointed and laughed, and old ladies went out of their way to give him a piece of their mind.

20/8/2025, 11:41:14 AM | 63 2 | View on Bluesky | view

Profile picture AltSSA (@altssa.altgov.info) reposted

This article is one of the first honest assessments of a Trump shitministration policy that Iโ€™ve seen so far.

20/8/2025, 11:32:19 AM | 20 5 | View on Bluesky | view

Profile picture Philip Gourevitch (@pgourevitch.bsky.social) reposted

Led by US senator Jon Ossoff, the investigation cites hundreds of reports since January, including accounts of miscarriages, child neglect, and sexual abuse at ICE detention centers in dozens of states. www.wired.com/story/senate...

20/8/2025, 11:30:12 AM | 1970 969 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Not being repeatedly invited to talk on major networks would be a start to banishing a whole bunch of folks.

20/8/2025, 11:34:44 AM | 88 1 | View on Bluesky | view

Profile picture Stuart Neil (@tetherin.bsky.social) reposted

rasmussenretorts.substack.com/p/bhattachar... A chilling deep dive into the stark parallels between Lysenkoโ€™s destruction of Soviet science and how the MAGA NIH Director Bhattacharya is razing US biomedical research to the ground. @angierasmussen.bsky.social deserves printing in major newspapers

20/8/2025, 9:22:18 AM | 86 27 | View on Bluesky | view

Profile picture Julian Sanchez (@normative.bsky.social) reposted

Which is a feature for them, not a bug: Trump is building a massive paramilitary force guaranteed to be composed pretty much exclusively of amoral MAGA goons.

18/8/2025, 9:29:37 PM | 146 32 | View on Bluesky | view

Profile picture David Dayen (@ddayen.bsky.social) reposted

BOMBSHELL: Former antitrust division #2 Roger Alford trashes the corrupt pay-to-play state of antitrust, says the HPE-Juniper merger should be blocked on those grounds. www.wsj.com/politics/pol...

18/8/2025, 7:25:22 PM | 147 71 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Only the best people

18/8/2025, 9:43:04 PM | 2 0 | View on Bluesky | view

Profile picture Ashton Pittman (@ashtonpittman.bsky.social) reposted

Has he ever clapped for one of our allies the way he claps for murderous dictators?

15/8/2025, 10:02:47 PM | 220 44 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Probably meant "dumpster fire"

15/8/2025, 12:39:46 PM | 0 0 | View on Bluesky | view

Profile picture Hakeem Jeffries (@hakeem-jeffries.bsky.social) reposted

Donald Trump promised to end the war in Ukraine on day one. Instead. He pardoned hundreds of violent felons who brutally beat police officers while attacking the Capitol.

15/8/2025, 12:36:43 PM | 1092 280 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

If you actually had something relevant to say about Tarski's theory of truth, you would have said it. Instead you play these games. It's an embarrassment to you.

13/8/2025, 10:04:13 AM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Stancil was completely correct about the Chinese Room, something that's understood by nearly everyone with a background in theory of computation. You don't appear to have such a background and don't understand why experts who do understand computation laugh at it.

13/8/2025, 10:03:23 AM | 0 0 | View on Bluesky | view

Profile picture Mark Jacob (@markjacob.bsky.social) reposted

It's a page out of the dictator playbook to declare fake emergencies to enable power grabs. That's exactly what's happening now.

11/8/2025, 3:12:14 PM | 432 156 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

"It's a logical fallacy" is one of the dumbest possible replies here. We are confronted every single day by challenges that require decision-making in the absence of complete information. Paradigm shifts take time because the evidence to overturn has to be substantial & explanatory power better.

12/8/2025, 9:28:06 AM | 1 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Doesn't it depend on how strongly the belief is held? I mean, it's a lot easier to overturn a belief like "I think I'm going to like okra, having never tasted it" than it is to overturn one like "God watches over and protects me every second".

12/8/2025, 9:23:46 AM | 0 0 | View on Bluesky | view

Profile picture Peter Baker (@peterbakernyt.bsky.social) reposted

The worst single-day crime spree in modern Washington history, of course, took place on Jan. 6, 2021. Trump issued no order to the National Guard to intervene -- Mike Pence did -- and later pardoned the perpetrators.

11/8/2025, 8:14:21 PM | 4433 1561 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

You see, that's the difference between a philosopher and a mathematician, or scientist. The latter two are happy to get to the point immediately, and not play games. The philosopher, on the other hand, takes forever to get there and when they finally do, you're amazed at how long it took.

12/8/2025, 9:16:41 AM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

The whole job of a philosopher is to pretend to argue rigorously about terms that are inherently fuzzy. It's a simulacrum of mathematics and mathematical thought, mixed in with a heavy dose of sneering.

12/8/2025, 9:15:05 AM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Sure you have. Stancil's completely correct and you're wandering all over the place, bringing up unrelated topics like Tarski's theory of truth. Searle's "Chinese Room" is another one of those things that philosophers agonize over, but people with actual training in the subject regard as trivial.

12/8/2025, 9:12:40 AM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Not by any reasonable person, in the absence of anything else. Interesting for me would be questions like, what physical models are powerful enough to carry out universal computation? Boring for me is whatever you think you are doing here, going way off the track of the original skeet.

12/8/2025, 12:22:10 AM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

They could be a computer, if the rules that governing their opening and closing are appropriate...just like Conway's Game of Life can be considered a universal computer. But it's not sensible to look at a random arrangement of windows and say, "oh it's a computer". This is getting more boring.

12/8/2025, 12:18:47 AM | 1 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

I'm just saying, if you insist that a random arrangement of open and closed windows *must* be regarded as a computational state, most will not think you are serious. Not because you are necessarily wrong, but because it is not fruitful at all to think this way.

12/8/2025, 12:15:37 AM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

No, a computational state doesn't *require* the existence of humans doing computing. There's a lot of what can be viewed as various kinds of computation going on in the biological word and even the physical word (e.g., varves, although in that case it's rather primitive).

12/8/2025, 12:13:30 AM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

If you want precision, define for me your meaning of "computation state". Are we talking about abstract computational models, their physical instantiations, or what?

12/8/2025, 12:08:10 AM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

It's reasonable to say that windows represent a computational state if they're being used for computation. But if it's simply that some frames are loose and allow some sashes to move, then calling it a computational state would just be regarded as silly. This is a very boring conversation.

12/8/2025, 12:04:54 AM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

The term "observer-relative", like most philosophical games, is too vague for me to give an answer. If you would like to propose an experiment we could do in principle to decide your question, now that's something we could discuss. My point was more about language than about some property.

12/8/2025, 12:01:14 AM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

As I said, in mathematics we are trained to communicate precisely. I can't help it if your discipline has sloppier rules.

11/8/2025, 11:57:30 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

You could say that, but you'd be wrong. It wouldn't "be" that computation state unless it was being used for computation. Otherwise it could just be windows.

11/8/2025, 11:56:33 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Sure, but that has very little resemblance to your prior claim that "Everything can map onto anything if you try hard enough."

11/8/2025, 11:54:51 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Quine and Tarski, sure. Tarski/Mostowski/Robinson's _Undecidable Theories_ is a pretty important book in my area.

11/8/2025, 11:53:42 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Yes, and in principle you could do computation by using windows and moving them up and down according to certain rules. But then it would be the *rules* that are the important thing, not whether the 0's are represented by bits or windows. That's one of the fundamental insights of computation.

11/8/2025, 11:52:01 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

I can't give you a course in theory of computation in a skeet but 1. There are different cardinalities, so not every set can be in bijection or {in,sur}ject into every other set. 2. There are hierarchies of computational models, so (for example) a finite automaton doesn't have the power of a TM.

11/8/2025, 11:49:55 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

In mathematics we are taught to say what we mean with precision and elegance. I am once again unable to translate this babble into anything comprehensible.

11/8/2025, 11:46:47 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Whether your claim "*obviously* anything can be equivalent to anything else (of at least equal complexity)" is meaningless word salad, or just an attempt to backpedal from a previous claim, I cannot tell. I'll just leave it to others who are obviously smarter than I am to decide.

11/8/2025, 11:45:23 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

"Philosophers have had such a poor record over the last two thousand years that they would do better to show a certain modesty rather than the lofty superiority that they usually display." -- Francis Crick.

11/8/2025, 11:23:01 PM | 1 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

If they don't pause, it could be because they have some training in neuroscience and/or theory of computation.

11/8/2025, 11:13:37 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Also, I talked about a calculator (thinking of an electronic calculator), not a "slide rule". A "slide rule" is not usually called a "calculator" these days, although it might have been 70 years ago. So you're misrepresenting me.

11/8/2025, 11:11:05 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Maybe you should look at the convo to see how he misrepresented what I said.

11/8/2025, 11:09:00 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Now you're lying. I didn't say that about a "slide rule", but rather about a calculator (meaning a digital calculator), and I qualified it by saying it was reasonable to think it had a very rudimentary intelligence, because intelligence is not a binary quality.

11/8/2025, 11:08:37 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

maybe an obelix, too

11/8/2025, 11:07:03 PM | 2 1 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

I'd have just been tempted to reply, "Get f*cked, moron!"

11/8/2025, 11:05:17 PM | 2 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Why does the economist look like somebody is holding his kids hostage?

11/8/2025, 10:52:12 PM | 1 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Lots of ideas about computation seem preposterous at first glance to people who have no training in the subject, just like people find relativity preposterous. Don't understand why you want to mute ideas of experts that challenge your understanding, but you do you.

11/8/2025, 10:45:47 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Why do you keep talking about sentience when I've said explicitly that's a different issue. Yes, I think calculators (and thermostats) can be reasonably said to exhibit a *very* rudimentary kind of intelligence. In my opinion, intelligence is not a binary "you either have it or don't" affair.

11/8/2025, 10:15:30 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

I think you can reasonably argue that MapQuest and Google Maps, etc., has intelligence, but of a rather limited sort.

11/8/2025, 10:12:47 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

I wasn't aware we were discussing sentience. I'm not claiming that ChatGPT 5 (say) has sensors that enable a continuous understanding of its environment.

11/8/2025, 10:11:49 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

The example was meant to counter the claim (which I can no longer see, since the fellow blocked me) that people could not reason in a text-based way on how to get from one place to another. If you ask ChatGPT 5 how to get from San Francisco to New York by car, it does quite a decent job.

11/8/2025, 9:52:36 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

And yet it didn't prevent you in the slightest from creating a straw man and then beating it.

11/8/2025, 9:49:48 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

No, not everything can map onto anything. That's one of the very first things you learn in a theory of computation course.

11/8/2025, 9:49:03 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

More assertions! Do you know any actual people? There is an entire political party in the US now that is governed by neither truth nor coherence.

11/8/2025, 9:48:21 PM | 0 0 | View on Bluesky | view

Profile picture Jeffrey Shallit ๐Ÿ‡บ๐Ÿ‡ฆ (@shallit.bsky.social) reply parent

Perhaps your inability to "know what to do" might be that you don't have a good training in computational models and the ideas of simulation and equivalence. Perhaps a course in the theory of computation might help. I taught such a course for decades.

11/8/2025, 9:47:19 PM | 0 0 | View on Bluesky | view