so if the decepticons had made humans stopped from going back to the moon in the 70s, why did it take them 30 years to find megatron. Also, did I hear in DOTM right that Sentinel said he was planning on meeting megs on earth back during the war with the bridge? if the decepticons had hid the pillars back then they waited years until prime would come to earth and awaken sentinel for them? so the allspark just happened to bump into an asteroid and hit earth? did they not know the allspark was on earth until sam put his great grampas glasses up on ebay? Am I off base here? Is there any explanation or is this me forgetting half the movie?