If as Triadic Philosophy holds, reality is all, then that part of reality which is not yet known or understood may be called mystery. And the progression of thought facing mystery runs first to supposition and moves to inference and then to hypothesis. Such as plants can hear or plants have feelings. One assumes that we will compile more and more data and that the borders of mystery will recede.
"And we assume you need ears to hear. But researchers, says Pollan, have played a recording of a caterpillar munching on a leaf to plants -- and the plants react. They begin to secrete defensive chemicals -- even though the plant isn't really threatened, Pollan says. "It is somehow hearing what is, to it, a terrifying sound of a caterpillar munching on its leaves."" http://buff.ly/1xxcwcN
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