.THE function of Bayesian inversion to a stable of lithologic guidelines in an analysis of seismic data rarely seems to be the stuff of titles. Yet when the seismic records you are determining stemmed from Mars, as well as when your thinking advises that the very best illustration for all of them is actually liquid water in the pores between stones, you have an account. There is dwarfs thirst for much more, when it pertains to global scientific research, than water on Mars. Why carries out the possibility provoke such pleasure-- and what does this brand-new research add to the account?