sophistry; false syllogism
A yojijukugo referring to the logical paradox 'a white horse is not a horse,' used to describe sophistry or fallacious reasoning that plays with definitions.
His argument is nothing but sophistry like the 'white horse is not a horse' paradox.
From the classical Chinese philosophical paradox by Gongsun Long, arguing that 'a white horse is not a horse' because 'white' and 'horse' refer to different concepts. The phrase is used in Japanese as a yojijukugo for sophistry.