Attribution of quote "The apparent duck becomes an obvious rabbit"?

Question

The quote

The apparent duck becomes an obvious rabbit

refers to a paradigm shift. I've only seen one paper including it, and the author uses it as if it is common. Is it used elsewhere, or with a different comparison?

Answer 1

Limited as Google is as a tool for lexical research, the fact that Googling the phrase fails to turn up anything beyond this question suggests it's unique to the author. I don't think they've used it as though it's common, though; it's simply a reference to a relatively well-known visual paradigm shift.

Answer 2

At least in philosophy, the duck-rabbit illusion was first made famous by Wittgenstein in his "Philosophical Investigations": http://en.wikipedia.org/wiki/Philosophical_Investigations