.THE function of Bayesian contradiction to a range of lithologic guidelines in an examination of seismic data hardly seems the stuff of headlines. But when the seismic records you are assessing arised from Mars, as well as when your thinking suggests that the most effective explanation for them is liquid water in the pores in between rocks, you possess a story. There is actually little people thirst for a lot more, when it involves global scientific research, than water on Mars. Why does the possibility prompt such enthusiasm-- and what does this brand-new study add to the account?