'For the person or persons that hold dominion, can no more combine with the keeping up of majesty the running with harlots drunk or naked about the streets, or the performances of a stage player, or the open violation or contempt of laws passed by themselves than they can combine existence with non-existence'.

- Benedict de Spinoza. Political Treatise. 1677.




Saturday, December 06, 2014

Philosophical Grammar 70


70. What happens when a proposition is taken into a language: what is the criterion for it being a proposition?

In this respect the concept of number is like the concept of proposition. On the other hand the concept of cardinal number can be called a rigorously circumscribed concept, that is to say, that is to say it’s a concept in a different sense of the word.



a proposition is a proposal –

what happens when a new proposition is taken into the language – is that it is proposed – and each time it is used – it is proposed

what is the criterion for it being a proposition?

that it is proposed

a concept is if you like a back story for a proposition –

a way of talking about it

it is not that the concept of number is like that of the concept of a proposition –

numbers are propositions

if it’s proposed – it’s a proposition

the cardinal number – ‘a rigorously circumscribed concept’?

the cardinal number is a proposal – is a proposition

a proposal in number theory –

‘rigorously circumscribed’ –

is to say that in the practice of number theory – this proposal –

is described as having certain characteristics and functions

as the history of cardinals shows –

these characteristics and functions – the descriptions –

are open to question – to interpretation –

open to exploration



© greg t. charlton. 2014.