Yes, of course, but you have some guideposts - the more deeply and widely a heuristic is held, the greater attention you should give it. Another good example i

Yes, of course, but you have some guideposts - the more deeply and widely a heuristic is held, the greater attention you should give it. Another good example is the sabbath - widely adopted and prescribed by all ancient religions, and something that every modern society needs to relearn (and fight for, in the case of urban workers in the industrial age). Fasting. Remembering the sabbath and keeping it "holy". You could do a lot worse than things like that ...