 Hetraced the thesis' earliest iteration in Plato's "Charmides" and the Book of "Lambda" of Aristotle's "Metaphysics".He also cited examples drawn from other points of philosophical history, citing the works of Augustine, Averoes, Thomas Aquinas, and Baruch Spinoza, among others.In response to the critique about the implausibility of the KK thesis, Hintikka stated that it is not an important point because what matters is that the principle is able "to capture a strong sense of knowledge".