Matt Zimmerman <[EMAIL PROTECTED]> writes: > On Thu, Nov 21, 2002 at 02:17:10PM -0500, Branden Robinson wrote: > > > On Thu, Nov 21, 2002 at 11:55:35AM -0500, Matt Zimmerman wrote: > > > To rely on gracious behaviour from other organisms is a losing > > > evolutionary > > > strategy, and to attempt to avoid bruised feelings by inducing change in > > > social norms is a doomed proposition. > > > > > > Adapt. > > > > I read in Dawkins that "tit for tat" was the most evolutionarily stable > > strategy. :) > > But didn't Tit for Two Tats compete favourably against simple Tit for Tat?
These days, incidentally, Prisoner's Dilemma is thought to be a poor model for normal types of social interaction. The more common cases are actually best modeled by a "Stag Hunt", anyhow. Which is the best strategy depends (of course) on all kinds of details. The early iterated prisoner's dilemma contests are unfortunately all that most computer types have heard of, but the state of the art has vastly moved on since then.