Before revision:  In particular, three previously studied strategies emerge as special limits of our model:  when environmental cues are URLanisms rely on the cue to express the favorable phenotype in each environmental condition ("tracking strategy"), when cues are URLanisms either express a same phenotype in all environments ("unvarying strategy ") or, remarkably, use the uninformative cue as a source of randomness to diversify into subpopulations of different phenotypes ("bet-hedging strategy"). The capacity of exploring diverse responses and evolving different strategies is associated with having a high-dimensional internal representation of the environment.
After revision:  In particular, three previously studied strategies emerge as special limits of our model: when environmental cues are URLanisms rely on the cue to express the favorable phenotype in each environmental condition ("tracking strategy"), when cues are URLanisms either express a same phenotype in all environments ("unvarying strategy ") or, remarkably, use the uninformative cue as a source of randomness to bet-hedge. Our model of the environment-to-phenotype mapping is based on a network with hidden units; the performance of the strategies is shown to rely on having a high-dimensional internal representation of the environment.