Can you prove to me one thing?

[dumbseeker]

Can anyone prove to me this following statement is true:

Using reason is reasonable.

 

[MarcoPolo]

The statement is subjective and outside the boundaries of “proof” I would think.

 

[St_Gregory]

Can anyone prove to me this following statement is true:

Using reason is reasonable.

It’s proved analytically. Just like the claim “circles are round” are proved analytically.

 

[dumbseeker]

It’s proved analytically. Just like the claim “circles are round” are proved analytically.

What do you mean by “analytically”? How do you analyze it?

Reason is a thing that we cannot sea visually, not like circles.

 

[JonW]

It’s analytical in the philosophical sense of being true by virtue of the meanings of the words, in this case ‘reason’. It’s also a tautology, via sentential logic:

A ------> A
A​

A

Here’s the truth table: A : A ---------> A
____________T__T T T
____________F__F T F

Since the column under the conditional connective (---------->) is made up of all T’s, we have a tautological sentence in sentential logic. It is always true. There’s your proof.

God Bless

Jon Winterburn