.THE app of Bayesian inversion to a range of lithologic criteria in an examination of seismic data barely seems right stuff of titles. Yet when the seismic information you are actually assessing come from Mars, as well as when your thinking advises that the greatest description for them is liquefied water in the pores in between rocks, you have an account. There is actually little people thirst for much more, when it comes to global science, than water on Mars. Why performs the prospect prompt such enthusiasm-- and also what performs this new investigation include in the account?