.THE APPLICATION of Bayesian contradiction to a stable of lithologic parameters in an examination of seismic data hardly appears the stuff of titles. But when the seismic data you are assessing come from Mars, as well as when your thinking proposes that the most effective illustration for them is actually liquid water in the pores between rocks, you possess an account. There is actually dwarfs crave extra, when it concerns planetal scientific research, than water on Mars. Why performs the prospect provoke such exhilaration-- as well as what does this new investigation add to the tale?