Some historical linguists presume that all languages go back to a single common ancestor.

For most historical linguists there is no separate field of paleolinguistics.

This claim has not been accepted by historical linguists.

Most historical linguists consider the latter two methods flawed and unreliable.

Although most historical linguists believe this is unlikely, it is not yet possible to resolve the issue.

Because languages change so fast, historical linguists distrust language trees that go back more than a few thousand years.

Human population geneticists and historical linguists are also providing valuable insight for these questions.

The one followed by other historical linguists is Bender 2000.

While well-known, the Gulf grouping is now generally rejected by historical linguists.

However, historical linguists have never found a derivation with which they are universally comfortable.