The Double Blind Gaze
I've gotten permission from The Skeptics Society to post one of their old articles on this site. The article is:
The Double-Blind Gaze: How the Double-Blind Experimental Protocol Changed Science.
If you've never read this article before, I highly recommend that you do so now. It focuses mainly on medicine, but also shows how it can be difficult to determine the truth of reality, and why the scientific method is so important.
