.THE function of Bayesian contradiction to a series of lithologic specifications in an evaluation of seismic information barely seems the stuff of headlines. However when the seismic records you are determining arised from Mars, and also when your reasoning suggests that the most effective description for them is liquid water in the pores between rocks, you possess a story. There is dwarfs crave much more, when it relates to earthly science, than water on Mars. Why carries out the possibility provoke such exhilaration-- and what performs this brand-new research add to the story?