Necessary & Sufficient Conditions + Wittgenstein's Objection

[@ThinkingAboutStuff]

So, can you define "chair"? What are its necessary and sufficient conditions?

[@LetsGetLogical]

To be a chair it is necessary and sufficient to be an instantiation of _chair-ness_ .

[@ThinkingAboutStuff]

Dang. That’s pretty good. Maybe this philosophy stuff is easier than I thought.

[@TheGemsbok]

A chair is a featherless quadruped.

[@stefanbjarnason251]

I've got a three-legged armchair that's decorated with feathers. Gemsbok's description fails.

[@TheGemsbok]

@@stefanbjarnason251 Slow down there, Diogenes.

[@jOFOF827]

this really helps , thank you

[@spacecupcake4245]

Based