User talk:205.215.222.198

I appreciate the effort to fix what you saw as an oversight on Speed of light, but "pure reason" is a more apt term. It's a real piece of philosophical jargon. Its meaning in philosophy is ideas of truth arrived at through logical deduction and induction, rather than any sort of direct observation of the world. Examples include Descarte's "I think therefor I am", and a total rejection of it gets you things like Hume's radical skepticism. I'm going to revert your change, but I thought I'd explain why first. ikanreed 🐐Bleat at me 19:26, 23 October 2019 (UTC)