.THE function of Bayesian inversion to a variety of lithologic criteria in an assessment of seismic data hardly seems right stuff of headings. However when the seismic information you are actually determining come from Mars, and also when your reasoning proposes that the very best explanation for them is actually liquid water in the pores between stones, you have a tale. There is actually little people thirst for even more, when it pertains to worldly scientific research, than water on Mars. Why performs the prospect provoke such excitement-- and what does this new investigation include in the account?