| The basic fallacy of glottochronology lies in the fact that it a priori assumes that all languages change at the same rate all the time. |
| Despite the outcry, glottochronology is still employed, but in mathematically increasingly complex and conceptually more sophisticated models. |
| New methods in glottochronology provide logical and empirical proof that the second assumption is true. |
| Unfortunately, the last published glottochronology for all the Caddoan languages dates to the 1960s, before the technique was refined. |
| It differs from glottochronology in the methods used to construct the tree and compute the dates. |
| He added that their argument assumed a constant rate of language change, the very point they know is wrong in glottochronology. |
