A concept which is useful here is punctuated equilibrium, which suggests that long periods of "no change", punctuated by short periods of "radical change".
Some linguists have made invalid inferences from "modern" circumstances that exclude a priori the possibility of ancient language reconstruction. A. Vovin has discussed related issues. In my opinion, ethnic and linguistic stability in pre-agricultural societies did not permit the dramatic rate of vocabulary replacement observed more recently.
The proof is in the Comparison Studies presented below. If these studies are able to show cognates among languages now considered to be unrelated --- displaying regular sound and semantic correspondences, theoretical objections must retreat before plainly demonstrated facts.
The reader will be the judge of whether the Comparison Studies have, indeed, accomplished those objectives.
AFRASIAN COMPARISON Table(.HTM)
ALTAIC COMPARISON(.HTM)
BASQUE COMPARISON(.HTM)
BENG (Southern Mandé) COMPARISON(.HTM)
BLACKFOOT (Algonquian) COMPARISON(.HTM)
JAPANESE COMPARISON(.HTM)
draft MON/HMONG COMPARISON(.HTM)
PAMA-NYUNGAN COMPARISON(.HTM) (based on available materials)
(SINO-)TIBETAN COMPARISON(.HTM)
SUMERIAN COMPARISON Table(.HTM)
URALIC COMPARISON(.HTM)
THE PROTO-LANGUAGE(.HTM) [5 essays]
PROTO-LANGUAGE MONOSYLLABLES(.HTM)
PROTO-LANGUAGE PRIMER(.HTM)
TIMETABLE OF PROTO-LANGUAGE EVOLUTION(.HTM)
IE CORRESPONDENCE TABLE {with the principal IE-derived language families}(.HTM)
A Slightly Different View of sDm.f(essay-sDm.f.HTM)
Coptic Vocalism([One/Two/Three].HTM)
Pre-Nostratic Pronouns - Early Noun Substitutions (Mother Tongue 11, September 1990)(PERSPRO1.HTM)
Proto-Language "He" and "It" - IE -l/-n Nouns (Dhumbadji! Vol. 1, No. 4; Winter 1994)(PERSPRO3A/B.HTM)
Review of Alexis Manaster-Ramer's Some Borrowed Numerals in Proto-Kartvelian (Dhumbadji! Vol. 2, No. 3, December 1995) Review: Dhumbadji! Vol. 3, No. 1, Summer 1996 (critique-PKNumerals.HTM)

Patrick C. Ryan * 9115 West 34th Street - Little Rock, AR 72204-4441* (501)227-9947
PROTO-LANGUAGE@email.msn.com