We already seem to be going to hieroglyphics, except that it’s with emoji and has dialects depending on where and by whom its used. I’ve seen adults unable to understand the emoji lingo that teens used to communicate a lot of things, and this developed in the span of a decade (or lesser) with the widespread availability of emojis. I can only shudder to think of how complex and divergent things from now would seem even 50 years from now.