more from Ian Rumfitt

Single Idea 17462

[catalogued under 6. Mathematics / A. Nature of Mathematics / 4. Using Numbers / c. Counting procedure]

Full Idea

One requirement for a successful count is that double counting should be avoided: a single object should not be counted twice. ...but that is to make a knowledgeable judgement of distinctness - to resolve a question of identity in the negative.

Gist of Idea

A single object must not be counted twice, which needs knowledge of distinctness (negative identity)

Source

Ian Rumfitt (Concepts and Counting [2002], III)

Book Reference

-: 'Aristotelian Society' [], p.56


A Reaction

He also notes later (p.65) that you must count all and only the right things.