The argument that grants should be funded only on the basis of priority scores is fallacious. There is only a rough correlation between the quality of the science in an application and the priority score. As anyone who has ever served on a study section will attest, a host of different--and sometimes scientifically irrelevant--criteria can creep into play when arriving at a priority score, such as whether there are lots of typos in a grant (even the most accomplished scientists are not always great spellers). This is not because reviewers are vindictive or evil. Just that they are emotional and human. Until human judgment is perfected, granting agencies will always need to consider more than the priority score in making funding decisions.