This is true, and definitely evidence supporting the null hypothesis (that an underground folk remedy doen't actually work, despite stories that layman find com

This is true, and definitely evidence supporting the null hypothesis (that an underground folk remedy doen't actually work, despite stories that layman find compelling). But note that Crohn's and Ulcerative colitis (which Vic had) are different diseases. They are close enough related that about 10% of the time they can't be distinguished, but are pretty clearly distinguished statistically. http://gastro.ucla.edu/body.cfm?id=169 http://gastro.ucla.edu/body.cfm?id=169 Some of same treatments tend to be used for both, but the effectiveness is usually different between them. Given the lack of understanding of the underlying cause of the diseases, it's not clear how much failure of a treatment for one disease tells us about the other.