idk where to really put this (might turn into a blog post later or something). it’s what you might call a “hot take”, certainly a heterodox one to some parts of the broader #fediverse community. this is in response to recent discussion on “what do you want to see from AP/AS2 specs” (in context of wg rechartering) mostly devolving into people complaining about JSON-LD and extensibility, some even about namespacing in general (there was a suggestion to use UUID vocab terms. i’m not joking)
1/?
but beyond that, what does #ActivityPub actually do for #fediverse as a “network” “protocol”? basically nothing. you have a basic mechanism for delivering activities directly to subscribers, but no specified shape or structure for that payload. and you still need a lot of other specs to end up with something that talks to the “network”. even with AS2 vocab, you need more vocab extensions to express things you want to.
simply put, AP is not enough for a “protocol” to build a “network”.
7/?
@[email protected] This is related to my recent-ish realization (which I always knew on some level but never formulated explicitly) that AP simply does not have much to say about the mechanics of federation. And that there is basically nowhere that federation is defined; it is pretty much left as an implementation detail for the author of a server to figure out
but before you build a “protocol” for a “network”, consider: what even is a “network”, in this context? and, here’s the hot take: do you even want that kind of “network”? do you want a separate reified #fediverse network?
because the answer that #ActivityPub gives is actually a different one. There is no “AP network”, because AP as a protocol is not enough to build a concrete network. it is intended to provide, and exists in context of, the larger #Web.
8/?
this is the fundamental divide between #fediverse thinking and #Web thinking, where #ActivityPub straddles the line between both.
i’ve seen it said that the “open-world assumption” at the foundation of the Web is actually an undesirable thing for a “social networking protocol”, and as a consequence, specs built on that open-world assumption are “completely unsuitable” for that “protocol”.
but do we need a “social networking protocol”? do we even need “social networks” in the first place?
9/?
to build the #fediverse as its own “social networking protocol” then seemingly requires that we instead go with the closed-world assumption, contrary to the #Web
it requires ahead-of-time communication and coordination, where implementers need to be willing and available to talk to any other implementer, and this load grows with every new implementer.
it requires you to be aware of other extensions, present and future, because your extension might conflict with someone else’s extension.
10/?
the way extensibility works in a closed-world #fediverse is that “every implementer talks to every other implementer”. or maybe there is a central registry of extensions that everyone submits to their authority, as stewards of the “protocol” that is used to build the “network”. this trades out the n:n relation between implementers and other implementers, for an n:1 relation between implementers and the central registry.
the way extensibility works in an open-world #Web is you just do it.
11/?
@[email protected] Hmmm. In the open web we have a thing called a browser vendor whose job is de facto to act as the choke point where they are the ones who have to be aware of every implementation. Then as devs we get to black box it as “this is what web browsers support”.
@[email protected] yeah, this is complicated by every fedi thing being its own web browser :( and this is on top of it also being its own mail server… it just ends up doing both poorly.
the challenge in closed-world systems is how to scale communication and coordination as the number of implementers grows. without a central authority, it almost inevitably leads to power coalescing in the hands of the few most popular or largest implementations, who become the “de facto” standard and get to mostly do what they want, and everyone else mostly has to follow if they want to be compatible.
sound familiar? it should, because this is the model that the #fediverse follows today.
12/?
indeed, the #fediverse is more closed-world than open-world. you see this in the so-called “rejection” of json-ld among presumably the majority of fedi implementations. because for the most part, AS2 lets you ignore json-ld. it only matters for extensibility, and (specific criticisms of json-ld aside) json-ld also mostly allows you to ignore it.
so why do people still complain about it?
well, there is the concept of “context” in json-ld, which represents shared understanding.
13/?
when i say “john knows sally”, there are several ambiguities. we can solve ambiguities by disambiguating. one way to disambiguate is to be explicit about what any term or symbol means. one way to be explicit is to use uniform identifiers.
in particular, http/https uris have some convenient properties
14/?
so let’s say john is example.com/john and sally is example.com/sally
what do we use for “knows”?
well, there are multiple senses of the word “knows”:
we mean definition 1. so we might use example.com/vocab/knows/1
now we have the statement:
<example.com/john> <example.com/vocab/knows/1> <example.com/sally>
this is unambiguous, but we can go one step further: we can provide definitions at the uri
15/?
@[email protected]
<gestures to the sign>
https://social.coop/@MichaelTBacon/110634358031380559
Non-corporate/non-VC social media really needs to stop hating on “walled gardens” and start thinking about how you mind the gate that lets you into the garden and who gets in and who gets out.
If this exclusion still seems bad, start with “fascists” and then work outward from there.
@trwnh
I want fedi folks to start thinking about commons instead of getting hung up on stuff that’s basically warmed over “the cathedral and the bazaar.”
All functional commons involve inclusion and exclusion. They are neither purely closed nor open. They are variously open or closed depending on the combination of who you are and what you want to do.
@MichaelTBacon i think you’re using closed/open in a different way from how i’m using it, which for formal logic means either “everything is true unless it’s false” or “there are some things i don’t know, and they aren’t necessarily false, i just don’t know”
https://en.wikipedia.org/wiki/Closed-world_assumption
@[email protected] Ah, yes, I did miss that distinction, and it’s been long enough since I did formal logic that it didn’t ring a bell. I agree with your point too but yes, I see what you’re doing is different.
@[email protected] In other words, a “protocol” needs to know everything there is to know, and it is undesirable to have unknowns. Contrast with the viewpoint that it’s perfectly fine to have unknowns, and in fact, you can expect unknowns by default. You’ll never have a complete view of the universe.
@[email protected]
In that regard, I have to say that I think I’m still in a little bit of a grey area. The power of AP is in the fact that it can socialize a wide range of things, and I don’t think that world should be closed in advanced.
At the same time, a protocol needs a set of sub-standards at least (lots of old IETF protocols had CAPABILITY commands) that let you figure out which specific closed world you’re operating in.
@[email protected] i’m rotating in my head the idea of a FEP that defines a conformance profile for a “social networking profile” that basically formalizes what you’d need to implement a “fediverse network”, basically as a superset of AS2+AP (because AP is not enough on its own, it says nothing about message shapes or how to interpret specific props in a social network setting)