"I blame Jeb for letting you be such a smart aleck.” I stared at her. “I blame you for altering my DNA! I mean, I have wings, lady! What were you thinking?"

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An ecosystem, you can always intervene and change something in it, but there's no way of knowing what all the downstream effects will be or how it might affect the environment. We have such a miserably poor understanding of how the organism develops from its DNA that I would be surprised if we don't get one rude shock after another.

— Richard Lewontin