Ah, good thank you. I was looking forward to your response and got that part of my notifications. Interesting: "Substitution Property of Equality" for metaphors is your take. However... there's a problem (that I see): Metaphors are not complete substitutions. If you apply the same logic to each side of the equation, as it were, you do not always get the same results. Logic that may work when speaking about newtonian physics may not work when speaking about Poetry, and yet, metaphors can be used to bring the two worlds *seemingly* together. Wait - the substitution property of equality is a mathematical term. Yet it is also a fundamental tenet of logic. Does logic = mathematics? Or are there metaphors happening here? Also, this appears to be an "if and only if" situation, yes? ie - you can substitute one term for another if and only if you can substitute one term for another.... Perhaps not being concrete and being instead indirect appears to solve it... but, I dunno, there seems to be something missing here. For one, my understanding. But beyond that, something else. I'm getting a sense of smoke and mirrors.