Feivel,
Even if the hashem created a mature world why would he create bones of thousands of species of animals and remains of human civilazations that either never existed or were never lived in? there are still stars whos light is just reaching us today (that wernt visable a few yeas ago) why would it be neccesary to make stars from billions of light years away visable to make the world mature? and before these things were discovered there were still athiests and apikorsim so these things arnt necessary for there to be bechira. besides you have no proof to anything you said: you cant prove that the star light was instantly here less then six thousand years ago even though that goes against evreything we know about how the world works, while i by knowing the speed of light and how long it takes fossils ect. to form have a very strong physical proof that the world was here for way more then six thousand years. Again i beleive all this does not conflict with the torah so why beleive the way with less physical proof backing it up.