Single Idea 13819

[catalogued under 4. Formal Logic / A. Syllogistic Logic / 2. Syllogistic Logic]

Full Idea

Aristotle's system accepted as correct some laws which nowadays we reject, for example |= (Some Fs are G) or (some Fs are not G). He failed to take into account the possibility of there being no Fs at all.

Gist of Idea

Aristotle's said some Fs are G or some Fs are not G, forgetting that there might be no Fs

Source

comment on Aristotle (Prior Analytics [c.328 BCE]) by David Bostock - Intermediate Logic 8.4

Book Reference

Bostock,David: 'Intermediate Logic' [OUP 1997], p.353


Related Idea

Idea 14453 The Darapti syllogism is fallacious: All M is S, all M is P, so some S is P' - but if there is no M? [Russell]