Imagine a painting of a tree: a good, tall, healthy oak, standing proud on top of a hill. Now add a second oak to the painting, but…sickly: gnarled, bent, with bare branches. As you look at that painting, your mind will understand it to be “about,” let’s say: vitality vs. weakness. Or: life vs. death. Or: sickness vs. health. It’s a realistic painting of two trees, yes, but there is also a metaphorical meaning implied, by the elements contained in it. We “compare” the two trees (or “compare and contrast” them), at first, anyway, without thought or analysis. We just see them. The two trees
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