.THE app of Bayesian contradiction to a stable of lithologic guidelines in an evaluation of seismic data hardly appears the stuff of headlines. Yet when the seismic data you are actually assessing stemmed from Mars, and when your thinking suggests that the greatest description for them is actually fluid water in the pores in between stones, you possess an account. There is little people thirst for even more, when it concerns planetary science, than water on Mars. Why carries out the prospect prompt such enthusiasm-- as well as what performs this new research study add to the tale?