There’s someone you want to hook up with. How do you find out if the attraction is mutual while avoiding the risk of rejection? That is simply not possible no matter how sophisticated a mechanism you use. Because in order for the mechanism to determine whether the attraction is mutual you must communicate your desire to hook up but she’s not that into you, well you are going to be rejected.
But rejection per se is not the real risk. Because if she rejects you without ever actually knowing it, you will be disappointed but you won’t be embarrassed. The real cost of rejection comes only when rejection is common knowledge between the rejector and the rejected.
So to design a mechanism that maximizes the number of hookups you need to give people maximal incentives to reveal whom they want to hook up with and to do that you need to insure them against common-knowledge rejections.
And that’s where Bang With Friends comes in.
Bang With Friends is a Facebook app, coded by a few college kids in a weekend, that facilitates no-risk hookups with people on your friends list. You say you’d like to bang them, and no one ever knows, unless they happen to say that they’d like to bang you, too.
Now this indeed takes care of one side of the incentive problem, but I worry about the other side. Suppose I want to know who wants to bang with me even if I don’t have the same lust for them. I can find out by putting all of my friends on my Down To Bang list. The only cost I pay for this information is that all of those who are down to bang with me will be told that I am down to bang with them. In some cases this could be lead to some embarrassment and awkwardness but I imagine some people would pay that price just to find out. And anticipating this possibility everyone is again reluctant to be truthful about who they do want to Bang for fear of being caught out this way.
One way to mitigate the problem is to replace the flat list with a ranking of your friends from most to least Bang-able, and then establish a hookup only with the friend who is highest on your ranking among those who want to Bang back. Then if you do decide to pad your list, you will put the reconnaissance Bangage low on your list. Of course this will allow you to find out those friends who put you highest on their ranking, but at least this is less information than you can get with the existing system.
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March 12, 2013 at 3:46 am
Enrique
Put this app under the “There is no great stagnation” file …
March 12, 2013 at 7:05 am
Matt
I’d predict that this quickly unravels to everyone reporting that they want to bang everybody. The information loses its value pretty quickly relative to the risk of embarrasment as the probability that others do this rises. I don’t think your solution is incentive compatible unless it’s a one-shot game. If the app lets me re-rank people, then I can keep randomizing to eventually get the same information as the current system.
March 12, 2013 at 8:14 am
Preventing Common Knowledge: Bang With Friends | Fifth Estate
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March 12, 2013 at 10:30 am
Scott
Man, I had this idea in high school!
I think one solution is that HOW MANY people are on your bang list is publicly shown to all. This both puts a cost on having a big list, and scales the significance of each double-coincidence. “True love” is when two people with a list size of one are matched up.
Furthermore, users can set a threshold. For example, if A sets the threshold to 10, and has B on her list, but B has 11 people on his list, then no action is taken, and B learns nothing.
March 12, 2013 at 10:54 am
Scott
And I should add, that the “threshold” part could be implemented even without the “public list size” part. This might actually be the most interesting thing to consider from a theoretical perspective.
March 12, 2013 at 10:56 am
José Antonio Espín Sánchez
How about a matching algorithm? Every weekend the app will give you only one name, the most hookable counterpart. Based on both your ranking and his/her. But, and this is the cool thing, it will give you his/her name only if he/she received yours.
In this case, it is a take or leave it (until next weekend) offer, the signal is very precise, and the risk of embarrassment is low.
(I know what you are thinking, this is not IC and people will not rank according to their true preferences, but, hey, this is real life and you get a hook every weekend…)
March 12, 2013 at 10:58 am
Matt
It’s still manipulable if you can change your list. And you need to allow this, otherwise people have little chance of finding a match with a small threshold and a realistic number of social contacts.
March 12, 2013 at 11:05 am
José Antonio Espín Sánchez
Once a week, this is a good balance. You can change your list once a week, starting on Fridays. It is manipulable, but you it will take more than a year to fully disclose all the information and, who knows, maybe the order you place your manipulated ranking is not random but subconsciously put…