Story after story, they pile up, dozens upon dozens of conversations, with or without words, conversations with pets, bears, coyotes, rivers, trees, owls, hawks, eagles, mice.
A friend said, "That's all very nice, but do you have any scientific verification?"
I have plenty of empirical data, but that just means I'm relying on direct experience, not abstract theory. Strictly speaking, scientific verification is impossible, because science is by definition the study of objects, and a conversation is an interaction between two or more subjects. In science, you repeat an experiment in a controlled environment, and you eliminate variable after variable until any moderately careful person can make the same thing appear. Derrick Jensen, A Language Older than Words, p.64