A model of Boolean agents competing in a market is presented where each age
nt bases his action on information obtained from a small group of other age
nts. The agents play a competitive game that rewards those in the minority.
After a long time interval, the poorest player's strategy is changed rando
mly, and the process is repeated. Eventually the network; evolves to a stat
ionary but intermittent state where random mutation of the worst strategy c
an change the behavior of the entire network, often causing a switch in the
dynamics between attractors of vastly different lengths.