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Single Idea 14450

[filed under theme 10. Modality / B. Possibility / 8. Conditionals / c. Truth-function conditionals ]

Full Idea

There is no need to admit as a fundamental notion any form of implication not expressible as a truth-function.

Gist of Idea

All forms of implication are expressible as truth-functions

Source

Bertrand Russell (Introduction to Mathematical Philosophy [1919], XIV)

Book Ref

Russell,Bertrand: 'Introduction to Mathematical Philosophy' [George Allen and Unwin 1975], p.154


A Reaction

Note that this is from a book about 'mathematical' philosophy. Nevertheless, it seems to have the form of a universal credo for Russell. He wasn't talking about conditionals here. Maybe conditionals are not implications (in isolation, that is).