Organon F

Volume 29, May 2022, Issue 2, Pages 268–274

ISSN 2585-7150 (online) ISSN 1335-0668 (print)

Research Article

Conditional Uniqueness

Erhan Demircioğlu


In this paper, I aim to do three things. First, I introduce the distinction between the Uniqueness Thesis (U) and what I call the Conditional Uniqueness Thesis (U*). Second, I argue that despite their official advertisements, some prominent uniquers effectively defend U* rather than U. Third, some influential considerations that have been raised by the opponents of U misfire if they are interpreted as against U*. The moral is that an appreciation of the distinction between U and U* helps to clarify the contours of the uniqueness debate and to avoid a good deal of talking past each other.


Rationality; rational belief; evidence; uniqueness; permissivism.

Author(s) and affiliation(s)


Erhan Demircioğlu


Koç University


Department of Philosophy, Koç University, Rumelifeneri Yolu, 34450, Sarıyer – Istanbul, Turkey


About this article


21 January 2021


12 February 2022

Published online

23 April 2022


Institute of Philosophy of the Slovak Academy of Sciences

Institute of Philosophy of the Czech Academy of Sciences

Cite as


Demircioğlu, E. (2022). Conditional Uniqueness. Organon F29(2), 268–274.


Demircioğlu, Erhan. 2022. "Conditional Uniqueness." Organon F 29 (2): 268–274.


Demircioğlu, E. (2022). Conditional Uniqueness. Organon F, 29(2), pp. 268–274.

Copyright information

© Erhan Demircioğlu

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