Oh. That's not the standard defition of "Rationalism" I heard. You make it sound like "overhtinking stuff you know about in the dark will net you more knowledge", while the definition I'm familiar with is "get an empty mind with no experience of anything besides itself and it will still be able to, say, come up with Math and work from there to make an awesome edifice that's never had an ounce of sensory experience in it", which is patently ridiculous.

I wonder now if that was a straw-man or Theme Park Version.