The word is derived from the Greek Template:Polytonic, which signifies something very difficult and impracticable, being formed from the privative α, and Template:Polytonic, "passage". When a question was proposed to any of the ancient Greek philosophers, especially of the sect of Academists, if he could not give a solution, his answer was Template:Polytonic, q.d. "I do not conceive it; I cannot see through it; I am not able to clear it up."
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