Exposing Fake Logic

Logical Criticism by Avi Sion

Blog posts : "logical criticism"



Exposing Fake Logic is composed of essays written after publication in 2013 of my work A Fortiori Logic, the product of major original research work spanning years. The core essays were written in reply to specific claims or counterclaims regarding a fortiori logic put forward by four differ…

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2. Luis Duarte D’Almeida

1.Luis Duarte D’Almeida


1.A second-hand conception

The subject of a fortiori argument is treated, mainly with legal perspectives, in a 2017 paper by Luis Duarte D’Almeida (henceforth, D’Almeida)[1] called Arguing a fortiori[2]. This is a pretentious essay, with few if any novel t…

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3. Mahmoud Zeraatpishe



In my 2013 book, A Fortiori Logic (henceforth AFL), I studied a fortiori argument in depth, examining in extensive and meticulous detail its formal varieties and its practical applications. I found and analyzed a great many examples of such argument in world literature, inc…

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4. Michael Avraham, et al.


The present essay[1] is in reply to the general letter (called “A general treatment of Avi Sion's critique,” signed by Dov Gabbay, Michael Avraham, Uri Schild) and specific comments (authored by Michael, and presumably endorsed by Dov and Uri) that you sent to me on 21.1.2014, in reply to …

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