.THE APPLICATION of Bayesian contradiction to a range of lithologic guidelines in an analysis of seismic data rarely seems to be right stuff of titles. Yet when the seismic information you are analyzing stemmed from Mars, and when your thinking advises that the most ideal illustration for all of them is liquefied water in the pores in between stones, you have a tale. There is dwarfs thirst for more, when it pertains to worldly scientific research, than water on Mars. Why does the possibility provoke such pleasure-- as well as what does this brand-new investigation add to the story?