Rationally proving rationality

[Magicthighs]

‎"...Even rationality is grounded in a leap of intutition. There is no way to rationally prove that rationallity is a good way to look at the world. We intue it - that it is very helpful. And as we know, according to Pascal, the end point of rationallity is to demonstrate the limits to rationality."

Please define rationality.

Rationality - the state or quality of being rational.
Rational - Having or exercising reason.

Okay so far, if that's what you're intending rationality to mean.

Reason - the mental powers concerned with forming conclusions, judgments, or inferences [based upon observations].

Seems like you just went to dictionary.com and tacked "[based upon observations]" at the end of entry 3. Problem is, even by tacking on that bit, you're including reasons like "the voices told me to do it" and "I saw it in a vision". Even creationists base their claims on observations.

All you're saying here is that rationality means the state of using your mind to form conclusions, judgments or inferences [based on observations]. Do you know of any other ways to form conclusions, judgments or inferences?

I'm not sure what you're trying to say here.

What I'm saying is that your definition of rationality makes no sense.

You can make the definition of rationality whatever you wish, but the statement still stands that it's intued.

I disagree, unless you think "concluding that it has been shown to be the most effective methodology" is intuition.

The definition does not alter the argument in this case, as far as i'm aware.

I disagree. According to your definition all I have to do is use some observations to come to an answer. So here goes: rationality is rational because it seems to work pretty fucking well.

How's that?