.THE app of Bayesian contradiction to a range of lithologic parameters in an assessment of seismic information hardly appears right stuff of headlines. However when the seismic data you are analyzing arised from Mars, and also when your reasoning suggests that the most effective description for all of them is fluid water in the pores in between rocks, you possess a story. There is little people crave extra, when it involves worldly scientific research, than water on Mars. Why performs the possibility provoke such excitement-- as well as what does this new research study add to the story?