Argumenta – Journal of Analytic Philosophy


Discovering Early de Finetti’s Writings on Trivalent Theory of Conditionals [Special Issue]

Issue: Issue 12 • Author/s: Jean Baratgin
Topics: Epistemology, Metaphysics, Philosophical logic, Philosophy of science

The trivalent and functional theory of the truth of conditionals developed by Bruno de Finetti has recently gathered renewed interests, particularly from philosophical logic, psychology and linguistics. It is generally accepted that de Finetti introduced his theory in 1935. However, a reading of his first publications indicates an earlier conception of almost all his theory. We bring to light a manuscript and unknown writings, dating back to 1928 and 1932, detailing de Finetti’s theory. The two concepts of thesis and hypothesis are presented as a cornerstone on which logical connectives…