.THE app of Bayesian inversion to a stable of lithologic specifications in an evaluation of seismic records rarely appears the stuff of headlines. But when the seismic data you are evaluating originated from Mars, and also when your thinking suggests that the best explanation for them is actually fluid water in the pores in between rocks, you possess a story. There is dwarfs crave extra, when it involves wandering science, than water on Mars. Why performs the prospect produce such pleasure-- as well as what performs this brand new analysis add to the account?