The Earth is 6000 years old

Cool article about rapid phenotypic response to environmental change, ostensibly due to increased selection favoring more primitive genes and their characteristics. Easy to evolve fast when reverting to an earlier version of the software. No need to write new code, just make more copies of the old stuff and turn it back on again.

Of course, evolution is just a "theory". It's also possible the Flying Spaghetti Monster took all the old sticklebacks out and put in the new ones that he made, while no one was looking. Just to test our belief in Him.