Boid on Semitic Languages

Semitic languages have a three-element root system. In most roots these are three consonants, but sometimes it is three consonants with distinctive behaviour of one vowel. This complication is partly due to internal phonetic development, leading to disappearance of a consonant in a certain environment; and partly due to a process of transformation of the two-consonant root system of Afroasiatic into the three-consonant system of Protosemitic. When Jastrow connects a known three-consonant root with a two-consonant root, he is talking about what MIGHT have happened in 4,000 or 5,000 B.C. This is before there was a Hebrew language, before there was a Northwest Semitic subdivision, and even before Semitic was fully differentiated from Hamitic and Cushitic, and the Semitic structure was still being crystallised. It is by definition irrelevant to the history of Hebrew and by definition completely unsupported by any documentation. Aside from any of this, any roots cited by Jastrow that look as if made up of two consonants are themselves only guesses about the undocumented past. There are NO surviving two-consonant roots in Hebrew, with only half a dozen exceptions, perhaps ten if you really try to find them, all nouns with no related verb. There are admittedly three-consonant roots in Semitic that can be clearly seen to derive from identifiable three-consonant roots, but as just said, this was not a development within Hebrew, and the connection is not part of the structure of Hebrew.