Ok, I guess I'll be the first to be really on topic.
Over the years, I have heard several ideas about this, some of which I myself believed for years.
(1) The last thursday "theory". God created everything six thousand years ago but made it seem like it was already billions of years old. After all, the ancient people could already see a sky full of stars.
(2) Fossils, radiometric decay, and all that good stuff were put here by either god or satan (we don't really know which) to test our faith.
(3) Early and modern scientists were corrupted by materialism and seeked to be as far away from god as possible, and this meant coming up with a "theory" that both is mainstream and excludes god all together. Perhaps evolution was also fueled by early communists who seeked to destroy religion.
(4) All the evidence are true, but how they are interpreted depends if one has the so-called "god sense" or not. Scientists do not have god sense so they are unable to interpret the evidence correctly. Religious leaders and devouts have god sense so they are able to interpret the evidence as was intended by god.
I'm sure I've seen more explanations, but these are the major ones I can think of right now.
AKA G.A.S.B.Y.
George Absolutely Stupid Bush the
Younger
™ Version 4.2
