In a message dated 2/26/99 6:21:54 PM Mountain Standard Time, Odegard at means.net writes: >What are the objections to an earlier date for PIE? Does 5600 to 6000 >BCE seem too far back? >> -- the vocabulary of PIE rules it out. The common terms for wheeled vehicles and other late-neolithic innovations date it securely to the 4th millenium.