Solving the Moderator's Trilemma with Federation
The classic trilemma goes: āFast, cheap or good, pick any two.ā The Moderatorās Trilemma goes, āLarge, diverse userbase; centralized platforms; donāt anger usersāāāpick any two.ā The Moderatorās Trilemma is introduced in āModerating the Fediverse: Content Moderation on Distributed Social Media,ā a superb paper from Alan Rozenshtein of U of Minnesota Law, forthcoming in the journal Free Speech Law, available as a prepub on SSRN:
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4213674#maincontent
If youād like an essay-formatted version of this post to read or share, hereās a link to it on pluralistic.net, my surveillance-free, ad-free, tracker-free blog:
https://pluralistic.net/2023/03/04/pick-all-three/#agonism
Rozenshtein proposes a solution (of sorts) to the Moderatorās Trilemma: federation. De-siloing social media, breaking it out of centralized walled gardens and recomposing it as a bunch of small servers run by a diversity of operators with a diversity of content moderation approaches. The Fediverse, in other words.
In Albert Hirschmanās classic treatise Exit, Voice, and Loyalty, stakeholders in an institution who are dissatisfied with its direction have two choices: voice (arguing for changes) or exit (going elsewhere). Rozenshtein argues that Fediverse users (especially users of Mastodon, the most popular part of the Fediverse) have more voice and more āfreedom of exitā:
https://en.wikipedia.org/wiki/Exit,_Voice,_and_Loyalty
Large platformsāāāthink Twitter, Facebook, etcāāāare very unresponsive to users. Most famously, Facebook polled its users on whether they wanted to be spied on. Faced with overwhelming opposition to commercial surveillance, Facebook ignored the poll result and cranked the surveillance dial up to a million:
https://www.nbcnews.com/tech/tech-news/facebook-ignores-minimal-user-vote-adopts-new-privacy-policy-flna1c7559683
A decade later, Musk performed the same stunt, asking users whether they wanted him to fuck all the way off from the company, then ignored the vox populi, which, in this instance, was not vox Dei:
https://apnews.com/article/elon-musk-twitter-inc-technology-business-8dac8ae023444ef9c37ca1d8fe1c14df
Facebook, Twitter and other walled gardens are designed to be sticky-traps, relying on high switching costs to keep users locked within their garden walls which are really prison walls. Internal memos from the companies reveal that this strategy is deliberate, designed to keep users from defecting even as the service degrades:
https://www.eff.org/deeplinks/2021/08/facebooks-secret-war-switching-costs
By contrast, the Fediverse is designed for ease of exit. With one click, users can export the list of the accounts they follow, block and mute, as well as the accounts that follow them. With one more click, users can import that data into any other Fediverse server and be back up and running with almost no cost or hassle:
https://pluralistic.net/2022/12/23/semipermeable-membranes/
Last month, āNathan,ā the volunteer operator of mastodon.lol, announced that he was pulling the plug on the server because he was sick of his usersā arguments about the new Harry Potter game. Many commentators pointed to this as a mark against federated social media, āYou canāt rely on random, thin-skinned volunteer sysops for your online social life!ā
https://mastodon.lol/@nathan/109836633022272265
But the mastodon.lol saga demonstrates the strength of federated social media, not its weakness. After all, 450 million Twitter users are also at the mercy of a thin-skinned sysopāāābut when he enshittifies his platform, they canāt just export their data and re-establish their social lives elsewhere in two clicks:
Mastodon.lol shows us how, if you donāt like your hostās content moderation policies, you can exercise voiceāāāeven to the extent of making him so upset that he shuts off his serverāāāand where voice fails, exit steps in to fill the gap, providing a soft landing for users who find the moderation policies untenable:
https://doctorow.medium.com/twiddler-1b5c9690cce6
Traditionally, centralization has been posed as beneficial to content moderation. As Rozenshtein writes, a company that can āencloseā its users and lock them in has an incentive to invest in better user experience, while companies whose users can easily migrate to rivals are less invested in those users.
And centralized platforms are more nimble. The operators of centralized systems can add hundreds of knobs and sliders to their back end and twiddle them at will. They act unilaterally, without having to convince other members of a federation to back their changes.
Centralized platforms claim that their most powerful benefit to users is extensive content moderation. As Tarleton Gillespie writes, āModeration is central to what platforms do, not peripheral⦠[it] is, in many ways, the commodity that platforms offerā:
https://yalebooks.yale.edu/book/9780300261431/custodians-of-the-internet/
Centralized systems claim that their enclosure keeps users safeāāāfrom bad code and bad people. Though Rozenshtein doesnāt say so, itās important to note that this claim is wildly oversold. Platforms routinely fail at preventing abuse:
https://www.nbcnews.com/nbc-out/out-news/sexual-assault-harassment-bullying-trans-students-say-targeted-school-rcna7803
And they also fail at blocking malicious code:
https://www.scmagazine.com/news/threats/apple-bugs-ios-macos_new_class
But even where platforms do act to ākeep users safe,ā they fail, thanks to the Moderatorās Trilemma. Setting speech standards for millions or even billions of users is an impossible task. Some users will always feel like speech is being underblockedāāāwhile others will feel itās overblocked (and both will be right!):
https://www.eff.org/deeplinks/2021/07/right-or-left-you-should-be-worried-about-big-tech-censorship
And platforms play very fast and loose with their definition of āmalicious codeāāāāas when Apple blocked OG App, an Instagram ad-blocker that gave you a simple feed consisting of just the posts from the people you followed:
https://pluralistic.net/2023/02/05/battery-vampire/#drained
To resolve the Moderatorās Trilemma, we need to embrace subsidiarity: ādecisions should be made at the lowest organizational level capable of making such decisions.ā
https://pluralistic.net/2023/02/07/full-stack-luddites/#subsidiarity
For Rozenshtein, ācontent-moderation subsidiarity devolves decisions to the individual instances that make up the overall network.ā The fact that users can leave a server and set up somewhere else means that when a user gets pissed off enough about a moderation policy, they donāt have to choose between leaving social media or tolerating the policyāāāthey can simply choose another server thatās part of the same federation.
Rozenshtein asks whether Reddit is an example of this, because moderators of individual subreddits are given broad latitude to set their own policies and anyone can fork a subreddit into a competing community with different moderation norms. But Redditās devolution is a matter of policy, not architectureāāāsubreddits exist at the sufferance of Redditās owners (and Reddit is poised to go public, meaning those owners will include activist investors and large institutions that might not care about your little community). You might be happy about Reddit banning /r_TheDonald, but if they can ban that subreddit, they can ban any subreddit. Policy works well, but fails badly.
By moving subsidiarity into technical architecture, rather than human policy, the fediverse can move from antagonism (the āzero-sum destructivenessā that dominates current online debate) to agonism, where your opponent isnāt an enemyāāāthey are a āpolitical adversaryā:
https://www.yalelawjournal.org/article/the-administrative-agon
Here, Rozenshtein cites Aymeric Mansoux and Roel Roscam Abbingās āSeven Theses On The Fediverse And The Becoming Of Flossā:
https://test.roelof.info/seven-theses.html
For this to happen, different ideologies must be allowed to materialize via different channels and platforms. An important prerequisite is that the goal of political consensus must be abandoned and replaced with conflictual consensusā¦
So your chosen Mastodon server āmay have rules that are far more restrictive than those of the major social media platforms.ā But the whole Fediverse āis substantially more speech protective than are any of the major social media platforms, since no user or content can be permanently banned from the network and anyone is free to start an instance that communicates both with the major Mastodon instances and the peripheral, shunned instances.ā
A good case-study here is Gab, a Fediverse server by and for far-right cranks, conspiratorialists and white nationalists. Most Fediverse servers have defederated (that is, blocked) Gab, but Gab is still there, and Gab has actually defederated from many of the remaining servers, leaving its users to speak freelyāāābut only to people who want to hear what they have to say.
This is true meaning of āfreedom of speech isnāt freedom of reach.ā Willing listeners arenāt blocked from willing speakersāāābut you donāt have the right to be heard by people who donāt want to talk to you:
https://pluralistic.net/2022/12/10/e2e/#the-censors-pen
Fediverse servers are (thus far) nonprofits or hobbyist sites, and donāt have the same incentives to drive āengagementā to maximize the opportunties to show advertisements. Fediverse applications are frequently designed to be antiviralāāāthat is, to prevent spectacular spreads of information across the system.
Itās possibleāāālikely, evenāāāthat future Fediverse servers will be operated by commercial operators seeking to maximize attention in order to maximize revenueāāābut the users of these servers will still have the freedom of exit that they enjoy on todayās Jeffersonian volunteer-run serversāāāand so commercial servers will have to either curb their worst impulses or lose their users to better systems.
Iāll note here that this is a progressive story of the benefits of competitionāāānot the capitalistās fetishization of competition for its own sake, but rather, competition as a means of disciplining capital. It can be readily complemented by discipline through regulationāāāfor example, extending todayās burgeoning crop of data-protection laws to require servers to furnish users with exports of their follow/follower data so they can go elsewhere.
Thereās another dimension to decentralized content moderation that exit and voice donāt addressāāāmoderating āharmfulā content. Some kinds of harm can be mitigated through exitāāāif a server tolerates hate speech or harassment, you can go elsewhere, preferably somewhere that blocks your previous server.
But there are other kinds of speech that must not existāāāeither because they are illegal or because they enact harms that canāt be mitigated by going elsewhere (or both). The most spectacular version of this is Child Sex Abuse Material (CSAM), a modern term-of-art to replace the more familiar āchild porn.ā
Rozenshtein says there are āreasons for optimismā when it comes to the Fediverseās ability to police this content, though as he unpacked this idea, I found it much weaker than his other material. Rozenshtein proposes that Fediverse hosts could avail themselves of PhotoDNA, Microsoftās automated scanning tool, to block and purge themselves of CSAM, while noting that this is āhardly foolproof.ā
If automated scanning fails, Rozenshtein allows that this could cause āgreater consolidationā of Mastodon servers to create the economies of scale to pay for more active, human moderation, which he compares to the consolidation of email that arose as a result of the spam-wars. But the spam-wars have been catastrophic for email as a federated system and produced all kinds of opportunities for mischief by the big players:
https://doctorow.medium.com/dead-letters-73924aa19f9d
Rozenshtein: āThere is a tradeoff between a vibrant and diverse communication system and the degree of centralized control that would be necessary to ensure 100% filtering of content. The question, as yet unknown, is how stark that tradeoff is.ā
The situation is much simpler when it comes to servers hosted by moderators who are complicit in illegal conduct: āthe Fediverse may live in the cloud, its servers, moderators, and users are physically located in nations whose governments are more than capable of enforcing local law.ā That is, people who operate ārogueā servers dedicated to facilitating assassination, CSAM, or what-have-you will be arrested, and their servers will be seized.
Fair enough! But of course, this butts up against one of the Fediverseās shortcomings: it isnāt particularly useful for promoting illegal speech that should be legal, like the communications of sex workers who were purged from the internet en masse following the passage of SESTA/FOSTA. When sex workers tried to establish a new home in the fediverse on a server called Switter, it was effectively crushed.
This simply reinforces the idea that code is no substitute for law, and while code can interpret bad law as damage and route around it, it can only do so for a short while. The best use of speech-enabling code isnāt to avoid the unjust suppression of speechāāāitās to organize resistance to that injustice, including, if necessary, the replacement of the governments that enacted it:
https://onezero.medium.com/rubber-hoses-fd685385dcd4
Rozenshtein briefly addresses the question of āfilter bubbles,ā and notes that there is compelling research that filter bubbles donāt really exist, or at least, arenāt as important to our political lives as once thought:
https://sciendo.com/article/10.2478/nor-2021-0002
Rozenshtein closes by addressing the role policy can play in encouraging the Fediverse. First, he proposes that governments could host their own servers and use them for official communications, as the EU Commission did following Muskās Twitter takeover:
https://social.network.europa.eu
He endorses interoperability mandates which would required dominant platforms to connect to the fediverse (facilitating their usersā departure), like the ones in the EUās DSA and DMA, and proposed in US legislation like the ACCESS Act:
https://www.eff.org/deeplinks/2022/04/eu-digital-markets-acts-interoperability-rule-addresses-important-need-raises
To get a sense of how that would work, check out āInteroperable Facebook,ā a video and essay I put together with EFF to act as a kind of ādesign fiction,ā in the form of a user manual for a federated, interoperable Facebook:
https://www.eff.org/interoperablefacebook
He points out that this kind of mandatory interop is a preferable alternative to the unconstitutional (and unworkable!) speech bans proposed by Florida and Texas, which limit the ability of platforms to moderate speech. Indeed, this is an either-or propositionāāāunder the terms proposed by Florida and Texas, the Fediverse couldnāt operate.
This is likewise true of proposals to eliminate Section 230, the law that immunizes platforms from federal liability for most criminal speech acts committed by their users. While this law is incorrectly smeared as a gift to Big Tech, it is most needed by small services that canāt possibly afford to monitor everything their users say:
https://www.techdirt.com/2020/06/23/hello-youve-been-referred-here-because-youre-wrong-about-section-230-communications-decency-act/
One more recommendation from Rozenshtein: treat interop mandates as an alternative (or adjunct) to antitrust enforcement. Competition agencies could weigh interoperability with the Fediverse by big platforms to determine whether to enforce against them, and enforcement orders could include mandates to interoperate with the Fediverse. This is a much faster remedy than break-ups, which Rozenshtein is dubious of because they are ālegally riskyā and ācontroversial.ā
To this, Iād add that even for people who would welcome break-ups (like me!) they are sloooow. The breakup of AT&T took 69 years. By contrast, interop remedies would give relief to users right now:
https://onezero.medium.com/jam-to-day-46b74d5b1da4
On Tue (Mar 7), Iām doing a remote talk for TU Wien.
On Mar 9, you can catch me in person in Austin at the UT School of Design and Creative Technologies, and remotely at U Manitobaās Ethics of Emerging Tech Lecture.
On Mar 10, Rebecca Giblin and I kick off the SXSW reading series.
[Image ID: A trilemma Venn diagram, showing three ovoids in a triangular form, which intersect at their tips, but not in the middle. The ovoids are labeled 'Avoid angering users,' 'Diverse userbase,' 'Centralized platforms.' In the center of the ovoids is the Mastodon mascot. The background is composed of dead Twitter birds on their backs with exes for eyes.]












