As a result, the two criteria that have been historically identified as important in the evaluation of the quality of intelligence analysis are relevance and objectivity. According to Georgetown University professor Jennifer Sims, "Intelligence analysis and estimation.. .should be as objective and relevant as possible.. ..Relevance, measured by the consumer's ability to assimilate and use the product, requires constant interaction between the analyst and the consumer. Objectivity, on the other hand, demands a certain distance and a willingness to consider all variables.