I take up the four issues considered by Johnson-Laird, Byrne and Girotto in their reply to Politzer (2007). Based on the conceptual clarification which they adduce, it seems that the disagreement can be settled about the first one (truth functionality) and can be attenuated about the second one (the paradoxes of material implication). However, I maintain and refine my criticisms on the last two...

although aristotle has considered the “universal substance” as a substance, he introduced knowledge as an accident. the question then arises as to whether a “universal substance”, whereas it is a substance, can be an accident. answering the question, ibn sina has changed the subject of the dispute from “mental substance” to “quiddity of substance”, so that he could guarantee its truth in the fo...

The SFLASH signature scheme stood for a decade as the most successful cryptosystem based on multivariate polynomials, before an efficient attack was finally found in 2007. This attack belongs to a new generation of cryptanalysis which targets geometrical properties of multivariate functions. It works particularly well on SFLASH due to its simple structure but further applications are emerging. ...