A number of scholars have criticized the various approaches used in the study of the historical Jesus: for the lack of rigor in research methods, and for being driven by "specific agendas" that interpret ancient sources to fit specific goals. New Testament scholar John Kloppenborg Verbin says the lack of uniformity in the application of the criteria, and the absence of agreement on methodological issues concerning them, have created challenges and problems. For example, the question of whether dissimilarity or multiple attestation should be given more weight has led some scholars exploring the historical Jesus to come up with "wildly divergent" portraits of him, which would be less likely to occur if the criteria were prioritized consistently. Methodological alternatives involving hermeneutics, linguistics, cultural studies and more, have been put forth by various scholars as alternatives to the criteria, but so far, the criteria remain the most common method used to measure historicity even though there is still no definitive criteriology.