.THE APPLICATION of Bayesian inversion to a variety of lithologic parameters in an assessment of seismic data barely seems right stuff of headings. But when the seismic records you are actually assessing come from Mars, and when your reasoning suggests that the best description for all of them is actually liquid water in the pores in between stones, you possess an account. There is little people crave a lot more, when it concerns planetal scientific research, than water on Mars. Why carries out the possibility produce such enthusiasm-- and what performs this brand new study contribute to the account?