.THE app of Bayesian inversion to a range of lithologic guidelines in an analysis of seismic records rarely seems right stuff of headlines. However when the seismic data you are actually evaluating originated from Mars, and when your thinking advises that the most effective illustration for them is liquid water in the pores between stones, you possess an account. There is dwarfs thirst for extra, when it pertains to earthly scientific research, than water on Mars. Why carries out the prospect produce such enthusiasm-- and what performs this brand-new analysis include in the account?