Having an in-depth discussion with other people over how good an explanation is, and finding the weak spots, gives you the best reason to trust the research of all - you know, then, the extent of the explanatory power of the claims made by the researchers. The crucial point is that the research is only trustable if peer review agrees that the study and argument are sound and that it provides a novel explanation of the phenomena it studies - and even then, it might be wrong.
http://www.preeclampsia.org/component/l ... e-research
(come comment over on that part of the site - your login here should still work!)
