15 APR 2011 by ideonexus

 The plural of anecdote is not data

A common way anecdotal evidence becomes unscientific is through fallacious reasoning such as the Post hoc ergo propter hoc fallacy, the human tendency to assume that if one event happens after another, then the first must be the cause of the second. Another fallacy involvesinductive reasoning. For instance, if an anecdote illustrates a desired conclusion rather than a logical conclusion, it is considered a faulty orhasty generalization.[10] For example, here is anecdotal evidence...

How anecdotal evidence proves nothing.