Originally shared by Robert Woodman
The graphic below is from an article by Compound Interest on the various types of scientific evidence. I came across this post first in the Science on Google+ community where it was posted by Gianmario Scotti (thank you!). The evidence is arranged from weakest (top) to strongest (bottom). As Gianmario correctly pointed out, it appears to be biased towards medical/clinical science, but (a) it is a "a rough guide," and (b) it is a helpful starting point to discussing acceptable types of scientific evidence.
#science #evidence
http://www.compoundchem.com/2015/04/09/scientific-evidence/
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