"The clarity of a scientific conclusion exists along a spectrum from
genuinely controversial to rock solid, but scientific evidence is always
complex, subject to multiple interpretations, and incomplete. It
doesn’t take much creativity to portray any scientific conclusion (even
those at the rock solid end of the spectrum) as murky. Creationists are
evidence of that."
http://theness.com/neurologicablog/index.php/fox-news-the-nfl-and-concussion-denial/