“…Despite some early cross-linguistic evidence which appeared to support a fairly constant rate of lexical replacement (Lees, 1953), Swadesh's hopes proved mis-placed. Even leaving aside the fact that the lexical stock is not the best system to reveal family relationships (Teeter, 1963) it seems that the rate is rather variable (Rea, 1958;Arndt, 1959;Fodor, 1961;Bergslund and Vogt, 1962), and so glottochronology is not widely used today. However, the assumption that the rate of change is approximately constant across all languages and all times is still frequently employed, if more tacitly, by scholars following a more orthodox approach to linguistic relatedness.…”