Quote:
We humans cannot change into any radically different body color, body shape, or behavior. We have evolved to maintain a certain homeostasis, or staus quo that has proved to be adaptive in the past. However, the genes of a butterfly are the same as those in a caterpillar. The difference is which are turned on or off, and when. . . .
Once an end result is achieved, it is hard for us to imagine an alternative that has proceeded along a different developmental trajectory without crediting it to magic or "talent." When we see in others something that we find incomprehensible for ourselves, it is easy to pass this off as "genetic." Naturally, it is exactly that; but this description still omits the essence of development, the miracle on the miracle. The possibility of individual caterpillars to generate amazingly different forms makes me appreciate what is possible in the debate over nature versus nurture.
While I know that Heinrich is not using the term "miracle" in the religious or dogmatic sense, he is using it to express the idea that there are many things in the world that we do not understand, and that it may be an overstep of our self-confidence to say that everything is explainable.