.THE APPLICATION of Bayesian contradiction to a variety of lithologic criteria in an evaluation of seismic information hardly seems to be right stuff of headings. Yet when the seismic information you are actually analyzing come from Mars, and also when your reasoning suggests that the most ideal description for all of them is liquid water in the pores in between stones, you possess an account. There is actually dwarfs thirst for a lot more, when it involves planetary scientific research, than water on Mars. Why does the prospect produce such excitement-- and also what does this new analysis add to the story?