Wow. The Greeks did well to invent runes that hold six numbers in a tiny square box. I can't imagine the precision hammers and chisels they would need for that.
to nitpick, I believe those used in Linear A are not technically "runes", i.e. the runes are only the ones used in writing systems for german languages, and derived from old italic alphabets.
I hate to sound alarmist, but I'm seriously worried that we're reaching "peak novelty programming language". If we don't start exploring alternative uses of free time now, we're going to be in serious trouble soon.