I just rang the gong and got a message of "The gong grants vision". If anyone has any idea what that's supposed to mean (or do) I'd appreciate a heads up, because I could see no discernible difference to my villagers, the food, or the technology, nor did anyone act in a peculiar way.

I got a kick out of the one "The gong grants life" and suddenly all my females of child-bearing age were pregnant! Wasn't too pleased though, since I breed for blonds and redheads, and got a bunch of dark haired babies. (Made them researchers, and never made them parents.)