Some people are actually capable of reading and understanding what you (and others) say, then remembering it and acting on it. We understand that everything that we do on line has the potential to be remembered by the system, and therefore recalled at some future date. Therefore we only say things that we're willing to have recalled twenty years from now. Similarly we know that it's not impossible for someone else to read our mail, so if we want to send a private communication we write a document, encrypt it with an appropriate tool, and then transmit the encrypted version.
So, Bruce, as a journalist, you're going to have to find a different drum to beat on.
The people who haven't absorbed the message so far? Tough. They'll either learn, or fall behind economically (or politically, or culturally ; all in some fairly vague sense). At which point, they (and their descendants) might as well be dead. Tough.