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On Trust (part I)

February 4th, 2006

Trust is a big topic. There’s a number of definitions out there related to different domains; everything from the famous Ronald Reagan “trust, but verify” dictum applied to international arms treaties, to “trusted computing” which is not about whether something is trustworthy, but whether it behaves predictably from a software/content provider’s point of view (and not necessarily the user’s!).

In general, most people tend, of course, to assume that “trust” means what the dictionary says: someone or something on which you can depend.

But let’s take a look at what the first six definitions in the dictionary actually say:

  1. Firm reliance on the integrity, ability, or character of a person or thing.
  2. Custody; care.
  3. Something committed into the care of another; charge.
    1. The condition and resulting obligation of having confidence placed in one: violated a public trust.

    2. One in which confidence is placed.
  4. Reliance on something in the future; hope.
  5. Reliance on the intention and ability of a purchaser to pay in the future; credit.

Common threads emerge in these definitions: a looking-forward into the future, a sense that something of value is being held by someone else, and that somehow integrity and character are related to these two factors. In short, that integrity can be measured as whether future interactions with someone will damage something you value.

This cuts to the heart of what was being discussed in the post and resulant thread on reputation systems, which sometimes go by another name in social software circles: “trust metrics.” Perhaps the best-known advocate of truly robust trust metrics is another Raph, whose work I first became aware of years ago when researching reputation systems.

Using Neil Gaiman’s metric of “who is ranked higher on Google,” I’m Raph #2, and he’s Raph #3. There’s a Raph #1 as well, of course. This may seem like a total tangent, but it isn’t, because Google’s PageRank system is (roughly) based on reputation votes in the form of links to a site. The more inbound links, the higher-ranked you will be. Effectively, Neil Gaiman is Neil #1 and is considered to be the prime authority on Neilness, beating out Neil Young. Here Google is leveraging the social reputation of a vast network in order to build a trust metric. The thing of value is your time, and the expectation of future interaction is whether or not the page you get when you hit “I’m Feeling Lucky” is actually what you want.

A while back I attended a conference where the theme was centered on trust. The proceedings of that conference are sealed, but an official report was produced. I ended up going off on a massive mental tangent during that conference, exploring my own mental constructs regarding the words “trust” and “authority,” and thinking about it in terms of what it might mean for virtual spaces. Bear with me, because this gets a little bit abstract, and even a bit idealistic, as we go.

Some basics that I take for granted

Let’s take the following as a truism: we’re more likely to behave nicely to people that we know we’re going to see again. There’s a body of literature surrounding this, and it’s not anywhere near simple — a number of factors play into it from many different angles. We’re also more likely to behave nicely towards people who look like us, exhibit common social signals as regards social class, and who are exuding some sort of authority. But broadly speaking, the literature indicates that an expectation of future interaction has very different results than if you don’t expect to see the person again. The classic depiction of this is Axelrod’s iterative tit-for-tat example.

It’s quite straightforward to connect this to discussions of Dunbar’s Number, aka “the monkeysphere.” So let’s take that as another truism: most people only have repeated significant interactions with a limited number of other people.

We can then turn around and think about the notion of “community standards.” These days this tends to mean a sort of terms of service document imposed from on high, but that’s actually exactly the opposite to what I mean: instead, think of it as “the standards the community imposes on itself.” These can be summed up by another word: culture.

The words culture, cultivate, and of course cult all come from the same Latin root, and this is no accident. We think of cults as brainwashing, but that is also what cultures do. They cultivate the group (get it to grow and grow strong) by inculcating (from the Latin root meaning “to force” and “to trample”) certain practices and worldviews. Deviation from these practices is punished, often by removing the support of the group from the deviant individual.

What we have here is the core of the term “peer pressure,” and also the core of the notion of “community policing.” In a group of appropriate size, as long as there is a culture established, you will see fellow members of the society enforcing the implicit rules of that society. People who deviate will be maligned, ostracized, and eventually (should there be a form of authority with this power) ejected.

This is only possible because of the promise of future interaction. This is perhaps best illustrated by recent events here on this blog. A culture has been established (and in fact, I’ve worked over years to establish it, via the manner of my participation on many different forums). Certain types of attacks and commentary isn’t welcome within that culture for a variety of reasons. When people showed up contravening that unspoken rule, other blog regulars started openly putting down the offenders. Notably, the authority (meaning me) didn’t. Some offenders promised to reform purely so they could maintain their access to the group resource: namely, the blog. Others persisted in their behavior. Eventually, the outcry was enough that the authority (again me) stepped in and enforced the unspoken rules and made them explicit. In effect, communitarian policing led to the creation of a “law.” The folks who joined but were disruptive were either normed into the group or were ejected via ostracization.

The “law” is interesting, because at that point, we move out of the realm of communitarian enforcement and into the realm of “authority-based” trust. At that point, there need not be any expectation of repeated interaction. You have a level of trust that the guy in front of you in the checkout line is not going to turn around and stab you in the eye with his Snickers bar because of mediated trust — you are relying on the authority above the both of you to keep that from happening.

Obligatory game-related point to make: This is in fact why in my community relations policies manual at SOE I recommend not having a “general game discussion” forum — by creating a community whose natural shared interest is so large, you rapidly grow beyond Dunbar’s Number, and thus rapidly create an environment where you must appeal to authority in order to get a civil environment. In other words, an overly large forum or game will have greater policing problems, because smaller groups are more effective at policing themselves via peer pressure. This is why the SWG forums were partitioned into so many smaller groups.

I also believe this is why the level-based segmenting of player populations into cohorts and “cozy worlds” is such a powerful dynamic, and why levelless systems have to find a compensating mechanic. Dunbar’s number is about our support system, not just about our knowledge sphere. Being outnumbered by the big bad world is uncomfortable. A big anonymous world is not as emotionally satisfying as a tight-knit community of reasonable size.

And all of that just covers the very first sentence in the notes I set out to transcribe. We have seven pages of notes to go! At this rate, I’ll finish in 2008.

Still to come in part 2 (and beyond, if need be):

  • “The relay problem” with authority appeals
  • “Trust is not transitive, but mistrust always is.”
  • Can we architect communitarian models that resist homogeny?
  • “The more distant the authority, the higher the burden of proof is.”
  • Is there such a thing as bottom-up authority?
  • What’s the difference between trust and faith?
  • Yes, of course we will talk about LambdaMOO!

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