Arnaud Spiwack
aspiwack.bsky.social
Arnaud Spiwack
@aspiwack.bsky.social
Multi-classed Software Engineer/Constructive Mathematician. Sometimes plays video games sort of fast. Puts topoi in your computer.
Reposted by Arnaud Spiwack
In one of his texts, Douglas Hofstadter suggests publishing a book called “Reviews of this Book” (you would first ask various reviewers to review the concept and collect their reviews into a book, then send them the result so they can update their reviews, and so on until a fixed point is reached).
November 30, 2025 at 9:19 AM
C'est un bon signe.

D'ailleurs, les let rebindables, ça a été introduit explicitement pour rendre les monades plus syntaxiquement plaisantes (il y avait quelques autres idées, mais c'était quand-même la motivation principale).
November 30, 2025 at 10:39 PM
C'est-à-dire que personne n'a jamais vu un Roc en vrai. Ils se cachent super bien, apparemment. Donc ça ce trouve ça ressemble à un poulet électrique, je sais pas.
November 29, 2025 at 12:57 AM
Oh… I was focused on the fact that the implications were programs. I didn't realise you proved an equivalence. Missing the forest for the tree… that's very funny.

Thanks for your patience. All very informative.
November 22, 2025 at 1:37 AM
I think this shows that J₀ is a L-T topology (of a very strong form shared with the identity topology). But not that J₀ is the identity topology. I feel I'm still missing a piece of this particular puzzle.
November 21, 2025 at 1:04 PM
I think that the point that's the least obvious in this tweet is why you can equate P with the set of programs which give a result in P.
November 20, 2025 at 10:49 PM
Je me rappelle toujours avec un certain amusement (et une chaleur certaine) de comment l'an 2000 paraissait futuriste dans la seconde moitié des années 90.

Apparemment, ce n'était pas un phénomène unique au nombre bien rond de 2000.
November 20, 2025 at 10:43 PM
I'll have to mull over it some. Thanks for the pointers.
November 20, 2025 at 10:13 PM
I wasn't. I don't think I was aware of this comic. Far side isn't really part of my culture.

I think the anticlimactic explanation actually enhances the comic. Thanks.
November 20, 2025 at 10:00 PM
For that reason, though, they feel like emphasis to me. Ending a sentence with a question mark is a question, starting it with the reversed mark adds a feeling of bemusement. That's how it reads to me.
November 19, 2025 at 10:03 PM
I have no particular knowledge about it. What I can say is that when I write Spanish, I tend not to use opening question and exclamation marks, because I find them difficult to plan for. It feels similar to planning sentences in verb-ending languages to me. So I assume it can be trained.
November 19, 2025 at 10:03 PM
This was the question indeed.
November 19, 2025 at 9:50 PM
It sounds like an improvement. Be well.
November 18, 2025 at 9:57 PM