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Stuart Presnell

@logopetria.bsky.social

Mathematics, CS, physics, philosophy Most recently : Teaching logic and philosophy of mathematics in the Philosophy department at the University of Bristol

393 Followers  |  212 Following  |  1,491 Posts  |  Joined: 20.11.2023
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Posts by Stuart Presnell (@logopetria.bsky.social)

Sure, if there's another rule for turning amplitudes into probabilities that's self-consistent and self-advocating then you have a dilemma. But is there such a rule?

06.03.2026 06:41 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

They'll have to build a whole new prison for all the too-online incel-culture troll-bros that this government's infected with

Call it Stockade Channing

06.03.2026 06:32 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Over in the real eternal steady-state universe someone's posting on their social media: "Imagine if anyone lived in one of these temporary cosmic bubbles that sometimes arise. They'd think that was the entire universe! That everything that exists had an origin and was expanding! Those poor losers"

06.03.2026 06:27 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

This seems analogous to the position of a civilisation that arises in the late universe with no other visible galaxies around, who therefore conclude that they're alone in a steady-state universe. Sometimes the truth is inaccessible and there's nothing you can do about it

06.03.2026 06:23 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

"It's too late, I've already depicted you as the cruel violent self-interested bully and myself as the tender kind open-hearted intellectual"

06.03.2026 06:12 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

tired: do audiobooks count as reading?

wired: does observing a cut-out photonegative of a book placed on a black background count as reading?

05.03.2026 20:57 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

bsky.app/profile/osul...

05.03.2026 20:38 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
The painting "Night in the Steppe" shows a vast plain under a bright full moon, the light being distributed over the landscape and the water in an almost magical way.

The painting "Night in the Steppe" shows a vast plain under a bright full moon, the light being distributed over the landscape and the water in an almost magical way.

This work is made by the renowned Ukrainian artist Ivan Marchuk, who invented the unique painting style called "plyontanism" (from the Ukrainian word plyontaty, meaning "to braid"). This technique consists of hundreds of fine, intertwined lines that create depth and an almost textile-like texture.

04.03.2026 19:26 β€” πŸ‘ 807    πŸ” 255    πŸ’¬ 8    πŸ“Œ 6

Chotiner takes out his notepad. β€œSo I’d like to start by…”

I raise a finger. β€œJust a moment, please, Isaac. I think Serena’s ready to serve”

04.03.2026 22:22 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Post image Post image

Brilliant. An expat im Dubai has a startling revelation, by @stephencollins.bsky.social

03.03.2026 19:20 β€” πŸ‘ 1427    πŸ” 507    πŸ’¬ 20    πŸ“Œ 15
Preview
You advocate a ________ approach to calendar reform You advocate a ( ) solar ( ) lunar ( ) atomic approach to calendar reform. Your idea will not work. Here is why: ( ) solar years are real and the calendar year needs to sync with them ( ) solar ...

(x) "7am" is a social construct
(x) social constructs are actually very important

03.03.2026 23:54 β€” πŸ‘ 27    πŸ” 6    πŸ’¬ 2    πŸ“Œ 1

07:54
I’m just sending a brief note to everyone in Stuart’s contact list to say that tragically [Read more]

08:00
Hi, I know you disagree but I don’t think we need to wait for another round of testing on the submarine

03.03.2026 15:05 β€” πŸ‘ 6    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

One of those grids where the thought β€œI should have a notebook beside me” occurs to you too late

03.03.2026 10:16 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

"In this paper we consider an issue that has been thoroughly and comprehensively explored in the literature. Has it received sufficient attention? If anything, more than sufficient. Nevertheless..."

02.03.2026 16:36 β€” πŸ‘ 8    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

Is this "flying through" as in just traversing the airspace or changing at an airport there? Either way I would definitely be looking for an alternative

02.03.2026 14:47 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Person A: knows lots about the country but somehow got the impression that it's *this* island rather than *that* island

Person B: can find the country on a map but doesn't know that it controls 98% of the world's vital hepnium supplies

Fortunately both do all their war fighting on Bluesky

01.03.2026 21:30 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Remember when that politician released that statement about a current event (more than a week ago)? Remember the words they chose? How important the order of their paragraphs were and the future that could've been if only it had been different?

01.03.2026 16:33 β€” πŸ‘ 213    πŸ” 28    πŸ’¬ 9    πŸ“Œ 9
The "Apollo's Gift Of Prophecy Dodgeball" meme template, the girls about to be hit with the dodgeball are labelled "John Horton Conway"

The "Apollo's Gift Of Prophecy Dodgeball" meme template, the girls about to be hit with the dodgeball are labelled "John Horton Conway"

Never understood before today why Conway called the last day of February "Doomsday"

28.02.2026 16:59 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
The algorithm for mental calculation was devised by John Conway in 1973, drawing inspiration from Lewis Carroll's perpetual calendar algorithm. It takes advantage of each year having a certain day of the week upon which certain easy-to-remember dates, called the doomsdays, fall; for example, the last day of February, April 4 (4/4), June 6 (6/6), August 8 (8/8), October 10 (10/10), and December 12 (12/12) all occur on the same day of the week in the year.

The algorithm for mental calculation was devised by John Conway in 1973, drawing inspiration from Lewis Carroll's perpetual calendar algorithm. It takes advantage of each year having a certain day of the week upon which certain easy-to-remember dates, called the doomsdays, fall; for example, the last day of February, April 4 (4/4), June 6 (6/6), August 8 (8/8), October 10 (10/10), and December 12 (12/12) all occur on the same day of the week in the year.

It's March 0th, so happy Conway Doomsday to all who celebrate

en.wikipedia.org/wiki/Doomsda...

28.02.2026 15:44 β€” πŸ‘ 5    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

Maybe it's just me, but if you hype up a video as "the most incredibly hilarious thing ever" then I'm automatically going into it like Statler and Waldorf, it's facing a 300 mph headwind, my arms are crossed tighter than the Gordian Knot

28.02.2026 14:18 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I don't know why people feel the need to raise expectations to such impossible levels. "This is the funniest thing I have ever seen, I was literally rolling on the floor in tears of laughter, they administered last rites to me just in case" and then you watch it and it's at best faintly amusing

28.02.2026 13:06 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Just seeing the start and end of this thread, I assume the chimpanzees are disagreeing about whether a try should be worth 4 points or 5

27.02.2026 16:59 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

I've just noticed that you can make a joke on the losing candidate's name, a little wordplay:

More like MATTHematically got too fEW votes Goodwin

27.02.2026 09:55 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Original post on hachyderm.io

PSA: The Amazon wishlist doxing threat is much greater and more immediate than folks might realize. Attack works like this:

Stalker who wants your address opens an Amazon seller account and lists themselves as a third party seller for any item on your public wishlist. Then, they order the item […]

26.02.2026 14:43 β€” πŸ‘ 33    πŸ” 254    πŸ’¬ 9    πŸ“Œ 8

Yeah, physics is just the stack of (n,k)-irreps of a stably k-tuply boromoidal n-twistoid. Unfortunately we don't know what any of those words mean

26.02.2026 09:07 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
All Set and Done - Studio Scully Games A challenging and fun tile-matching puzzle game for Android and iOS that's hard to put down!

Aaannnd it's live! All Set and Done is now available in the App and Play Stores πŸ₯³

It's a tile-matching game and is pretty challenging, but once you get into it it's pretty fun too (in our entirely non-biased opinion)!

Grab it here:
studioscully.com/games/allset...

#game #godot #puzzle #casual

25.02.2026 12:58 β€” πŸ‘ 6    πŸ” 2    πŸ’¬ 0    πŸ“Œ 2

πŸ€·β€β™‚οΈ

23.02.2026 09:52 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Darmok and Jalad, apparently at Tanagra for some reason

23.02.2026 09:48 β€” πŸ‘ 26    πŸ” 3    πŸ’¬ 1    πŸ“Œ 0
Preview
Mathematics in the Library of Babel β€” Daniel Litt Mathematics isn't only about saying true things. It's about asking the right questions, being confused, stumbling about, getting distracted, being wrong, recognizing when you're wrong, being stuck. Mo...

Some thoughts on AI and math, inspired by β€œFirst Proof”: www.daniellitt.com/blog/2026/2/...

21.02.2026 22:42 β€” πŸ‘ 87    πŸ” 26    πŸ’¬ 1    πŸ“Œ 13

Haven't you seen, the latest release of documents has a note in crayon "Dear CIA, mihgt be fun to shot psrident Kenendy this wekend, I found a spot were you can hide, yours Jeffy E aged 10"

20.02.2026 21:44 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0