[jec41]

Not neccessarily. If applied correctly, it can expose false premises, sometimes to the dismay of the philosopher.

Thats not new knowledge. That is the result of a more logical deducted argument for proof based on better deduction, information, and skill.

[Conservative Texan Mom]

I didn't say it was new knowledge. I said it's methods can expose false premises. It is useful when applied with logic and reason. It may not provide new info, but it can weed out bad info.