I'm way out of my element here, and I'm not going to offer many comments. Duncan sent along these links:
Then he said: "Bearing in mind that protosemitic is seen as originating amongst workers in Egypt."
Good question. Just what is Proto-Semitic language, and if it existed, then who originated it? I believe that we must use Budge with extreme caution. It's the work found in these links.
See also: http://www.biblicalarchaeology.org/daily/biblical-artifacts/inscriptions/who-really-invented-the-alphabet%E2%80%94illiterate-miners-or-educated-sophisticates/