No Exag. / joke: sci. increasinlgy fails:

The little known "decline effect".

Makes scientists nervous.

http://whyevolutionistrue.wordpress.com/2010/12/10/the-decline-effect-can-we-demonstrate-anything-in-science/

Evolutionary biology is like building a puzzle without knowing what the final picture will look like, whether you have all the pieces, and whether you have pieces to one or more different puzzles mixed in.