Where an assumption, usually precisely the one that is being argued, is disguised and sneaked into the premise, from which the conclusion is made.
I found an example of this at a website (
http://www.whoisyourcreator.com/bigbangtheory.htm) where it was trying to disprove the 'Big Bang Theory'.
quote:
Nothing has ever come from nothing
By saying "has ever", it assumes the big bang never happened, in order to disprove the big bang!
That website also has a terrible tactic (an uncommon one, but very annoying) of
PUTTING TEXT IN CAPITAL LETTERS AND RED TEXT, TO SOMEHOW ADD CREDENCE TO THE ARGUMENT!
By the way, EvoWiki has a great list of creationist fallacies:
http://wiki.cotch.net/index.php/Category:FallaciesAnd, because it's a wiki, you can edit in any examples that they missed or haven't got around to doing yet.
Edited by Doddy Curumehtar, : Added wiki link
"Der Mensch kann was er will; er kann aber nicht wollen was er will." (Man can do what he wills but he cannot will what he wills.) - Arthur Schopenhauer