.THE app of Bayesian contradiction to a variety of lithologic guidelines in an evaluation of seismic records rarely appears right stuff of headlines. Yet when the seismic records you are examining stemmed from Mars, and also when your reasoning advises that the most effective explanation for all of them is fluid water in the pores between stones, you have a tale. There is dwarfs thirst for more, when it comes to planetal scientific research, than water on Mars. Why performs the prospect prompt such excitement-- and also what performs this brand-new study add to the account?