Lady @Lady@cat.family

@gaditb @cpsdqs no, that is what i’m saying

i would be willing to bet the vast majority of http(s) identifiers ever assigned are not, today, dereferencable

and the probability that an identifier be dereferencable decreases with the stability of the thing being referred to. a magnet link, which refers only to a specific sequence of bytes, stops being dereferencable the moment that specific sequence of bytes stops being known

it's not possible to have a URL which refers both to a specific thing and which can survive entropy. this is not true of “non-frozen” URLs. even if you lose the original representation of a thing at a given http(s) URL, you can serve something close, or a placeholder for that thing, or an updated version of that thing. the less frozen the URL is, the more dereferencability can be maintained; they are competing concerns

i’m not saying they aren’t effective examples but i do take small amounts of psychic damage every time i read the Owl 2 specification

« The last axiom in the ontology is necessary to derive the mentioned conclusion; without it, the open-world semantics of OWL 2 would allow for situations where a:Quagmire is the same as a:Peter, a:Lois, a:Stewie, a:Meg, a:Chris, or a:Brian. » heaven forbid

@gaditb amusingly i think the most practical application for knowing the “heat” of URLs is with webcrawlers so they know how often to recrawl

@gaditb (for pURLs that aren’t MEANT to be dereferencable, see `tag:`, `urn:fdc:`, and `urn:uuid:`, among others)

@gaditb it is a useful concept in library science! altho the term of art there is “persistent identifier”. see https://arks.org/

it would also be a useful concept on the fediverse if fedi developers ever bothered to read a book on information science

@gaditb @cpsdqs magnet identifiers are often not dereferencable–they require peers. IPFS presumably as well.

for data: URIs, you do have to qualify “dereferencable” specifically to mean “on the Web”; data: URIs can always be converted into a stream of bytes, but it is an embedded stream, not a stream accessible using the Internet

(consequently, you can’t have two data: URI resources which link to each other)

@gaditb mhm

in practice you can’t have a URL be both frozen and dereferencable but it’s really easy to have a URL which is frozen and not dereferencable!

@gaditb all URIs are structurally immutable…… they are strings………

why is an animated gif an image?

girls who hate the Activity Vocabulary

only write HTML if u mean it

foiled also by the problem of decidability but that’s nothing new

servo, it’s cute that you added tabs to your browser but you still can’t right‐click

this website is such hacky shit but you know what! i don’t care!!