OM to Ogham
Plato observed that the advent of an alphabet making writing efficient for average people actually lead to less knowledge or disciplined communication. We need not blame the Phoenicians for this because people really could benefit from writing.
John Locke and many other scientists during the time when man thought there was some reality in prejudices like The Scale of Nature observed that language was a pre-requisite for consciousness. Although there is some truth in his observations which include the Tabula Rasa, this is pure hogwash and perhaps even worse than that. He may well have sought to make people feel inferior just as that Scale of Nature was designed to do to so many non-Europeans.
Common sense is a most uncommon thing it appears. We still have many people living under the pall of the Bible Narrative and other