.THE APPLICATION of Bayesian inversion to a stable of lithologic parameters in an evaluation of seismic records hardly seems to be the stuff of headings. But when the seismic information you are actually analyzing stemmed from Mars, and when your reasoning advises that the best illustration for them is fluid water in the pores in between rocks, you have an account. There is dwarfs crave a lot more, when it concerns planetal scientific research, than water on Mars. Why carries out the possibility produce such excitement-- and also what does this brand new investigation include in the story?