This list's purpose is to examine evidence pro and con concerning large scale stock construction re Native American languages. The group name derives from critical comments made in the linguistic literature in the period following the publication, in 1987, of the late Joseph H. Greenberg's 'Language in the Americas'. The latter work has been controversial among historical linguists, to say the least. Yet many typologically oriented linguists, geneticists, and others outside linguistics proper have rather uncritically adopted the groupings of languages proposed by the author, not to mention his method of mass comparison.

Yet despite all this many 'splitters' still toy with deeper relationships well out of the public eye. The answers may still be out there, though perhaps not the ones Prof. Greenberg intended.