.THE app of Bayesian inversion to a stable of lithologic criteria in an analysis of seismic information hardly seems to be the stuff of headings. Yet when the seismic records you are evaluating originated from Mars, and also when your thinking recommends that the greatest explanation for all of them is fluid water in the pores in between stones, you possess a tale. There is little people thirst for a lot more, when it comes to planetal science, than water on Mars. Why carries out the prospect prompt such enthusiasm-- and also what does this new research study contribute to the story?