The Language Families
How these connect
The comparative method and what it relates to. Every line is an evidence-backed relation, and the arrangement is fixed — this address draws this picture, today and next year.
Open more5
- Expand Afroasiatic — 1 more
- Expand Proto-Indo-European — 4 more
- Expand Bayesian phylogenetic dating of language families — 1 more
- Expand Language death — 2 more
- Expand The regularity of sound change — 1 more
Every relation drawn, in words9
- Afroasiatic · evidence_for · The comparative method
Two of its branches are documented for roughly five thousand years - Egyptian from about the start of the third millennium BCE, Akkadian not long after - so the family is where reconstruction can be checked against a written record rather than only against its own output.
- Language in the Americas, and its rejection · concerns · The comparative method
The rejection of the Amerind proposal turned on the claim that resemblance without demonstrated regular correspondence is not evidence of common descent.
- Bayesian phylogenetic dating of language families · depends_on · The comparative method
The cognate matrices the models consume are produced by ordinary comparative work, so a phylogenetic date can be no better than the correspondences underlying its coding.
- The comparative method · constrained_by · Language death
Every undescribed language that ceases to be spoken removes correspondences the method needs, so the evidence base is shrinking faster than it is being recorded.
- Sir William Jones · precedes · The comparative method
The Third Anniversary Discourse of 1786 stated the observation the method was built to test - that Sanskrit, Greek and Latin share verb roots and grammatical forms too systematically for accident - without itself supplying the regular correspondences that became the method.
- The comparative method · constrained_by · Contact, borrowing and the limits of resemblance
Borrowing can produce the resemblances the method looks for, so its conclusions hold only to the extent that loans can be identified and excluded.
- The comparative method · depends_on · The regularity of sound change
The comparative method can only extract correspondences if sound change applies to every word in the same environment rather than word by word.
- Proto-Indo-European · derived_from · The comparative method
The reconstruction is an output of the comparative method rather than an attestation, which is why its forms are written with an asterisk.
- Sino-Tibetan · constrained_by · The comparative method
Extensive monosyllabism, heavy tonal systems and sparse inflectional morphology leave the comparative method less of the grammatical material it depends on, which is why a family second only to Indo-European by speakers has a far less settled internal structure.