Rest In Peace, John Nash, hero of the movie ‘A Beautiful Mind’ and of many an economics student’s a-ha experiences, who died end of last month. Nash received the economics Nobel Prize in 1994 for his findings in game theory. Game theory, which studies interaction and negotiation, is one of the best fields within economics to consult for dating. I thought, within the wealth of Nash’s publications, his paper on “Two-person Cooperative Games” sounded about right for our theme; and indeed it offers a wealth of lessons from both its assumptions and conclusions. While his assumption that people are rational gave me pause, it actually turns out very useful if you wish to err on the side of caution in your strategies.

But let’s begin. Here are 5 essential lessons from Nash’s work for daters.

1. Make sure you can talk honestly with your date about everything of importance to you. If you want to cooperate at all, if you want to negotiate a good time together and maybe make some agreements, it is indispensable that the communication is open and honest. Otherwise, your agreements will be incomplete, or shaky, i.e. unreliable.
2. It is important that you can make agreements that work for both. It almost goes without saying, but after all I hear and see happening to many friends that are dating, I am not sure we can take this one for granted. Nash himself felt he needed to point it out as a key assumption before modeling cooperative games. You need to be able to agree on something, so that both of you understand what is meant by the agreement, and understand it in the same way. You also need to able to comply with and fulfil any agreements made. Given that we are talking dating, these agreements can range from the light (like, agreeing on a time to meet to go to the cinema) to the serious (agreeing to go exclusive, or, eventually, marry…). The ability to fulfil agreements implies:
3. None of you should have outside commitments that interfere with the relationship. Again, it should go without saying, but I am writing up some rational strategies here, based on a level-headed rational economist’s work. And from that perspective, anything can happen. Better check that your date does not come with baggage none of you is able to deal with. Neither should you. Incompatible outside commitments include, for example: being married, having another exclusive dating relationship, or having existing financial or time commitments that leave no money or no time worth mentioning for a new relationship.
4. Don’t take altruism for granted. It is safer to assume that your counterpart will go as far as he/she can without losing you. Better assume this first and assess any degree of altruism well before agreeing to, like, go steady. (Hint: you want a lot of altruism, while being mindful that all that looks too good to be true probably is.)
5. You may need an accountability framework. It is great if you can just blindly trust yourself and each other. But this is neither granted nor, possibly, as frequent as we’d like it to be. Nash suggests ‘something like an umpire’ to enforce agreements. Now, as this can prove complicated in dating, what about the following proxies: (i) a joint network of friends that knows or gets to know both of you well, and with whom you are willing to share where you stand dating wise; and (ii) for the younger or the more conservative among us: parents who are kept abreast of essential agreements. The accountability thing is naturally a small circle affair; I don’t advise publishing on facebook. It also should not be something that locks you into a relationship, but rather a trusted group that is in the know but otherwise neutral.

If this sounds too businesslike for love, ask yourself when you last held someone to these standards? If anything, your dating life deserves much more.

All this with the grain of salt that we are sometimes too irrational to apply the rationally obvious. But try and let me know how it goes!