Harry T. Edwards, Another ““Postscript” to “The Growing Disjunction Between Legal Education and the Legal Profession”, 69 WASH. L. REV. 561, 562 (1994)
[T]he problem began in the late ‘60s when an increasing number of individuals who aspired to become history professors or economics professors or philosophy professors or political science professors or literature professors discovered that there were few, if any, opportunities in those fields. After spending several years doing graduate work, they finally faced reality and attended law school. Most of these individuals had no real interest in law or in becoming a lawyer, but many were excellent students. As a result, they were hired by law faculties ... in increasing numbers .... This led to an explosion of interdisciplinary work in law, as well as to an increasing rejection of the importance of doctrinal analysis even in mainstream courses.
Obviously it's not true of every law and Ph.D. faculty member, but it is true enough that the law school scam folks ought to be taking notice.