'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.




Tuesday, August 18, 2009

on certainty 108


108. “But is there no objective truth? Isn’t it true, or false, that someone has been on the moon?” If we are thinking within our system, then it is certain that no one has ever been on the moon. Not merely is nothing of the sort ever seriously reported to us by reasonable people, but our whole system of physics forbids us to believe it. For this demands answers to the questions “How did he overcome the force of gravity?” “How could he live without atmosphere?” and a thousand others which could not be answered. But suppose instead of all these answers we met the reply: “We don’t know how one gets to the moon, but those who get there know at once that they are there: and even you can’t explain everything.” We should feel ourselves intellectually very distant from someone who said this.



Wittgenstein says ‘If we are thinking within our system it is certain that no one has ever walked on the moon.’

the issue here is authority – the ‘system’ per se is irrelevant

Wittgenstein accepts the ‘authority’ of science circa 1950 on this matter

all this authority as such comes to – is its assertion –

and any argument for it – is no more than its reassertion 

when Wittgenstein speaks of reasonable people I assume he is talking about those who accept the authority of this science on such matters

anyone who has an entirely different view – i.e. a magical view of the nature of the physical world –

will be regarded by Wittgenstein and his reasonable people as being without any authority for their views

and Wittgenstein says –

‘we should feel intellectually very distant from someone who said this’ –

that is true – and it is a fair way of putting it

people do operate with different systems of thought

nevertheless they have this in common – that they believe in the authority of their system – of their ‘knowledge’

the question can always be asked –  what is your authority based on?

if someone decides to put an end to this line of questioning –

they are forced to accept that all they have is their assertion

and that this is all their ‘knowledge’ comes to

in the business of arguing for our beliefs we will propose if we have to – some authority  

this is really no more than a rhetorical move –

nevertheless it is a mainstay of propositional practice

it is however philosophically healthy to realize that whatever argument we put –

and however forcefully we put it –

and however useful and productive it may turn out to be –

it is no more than one of many ways of describing and interpreting the unknown –

the world we live in


© greg t. charlton. 2009.