SOGFPP-
Okay, I am glad your kids get some exposure to other ways of life, and I can understand your protectiveness. I believe there are several threads in this forum that mention memes, and your actions can be explained by meme theory. I do respect that you are going to extremes to raise your children as you see fit, and your mention of parental influence was great, as Mr Spinkles said. No, I don't have kids, but I am a kid and I was just speaking from personal experience.
Ronald-
Actually, there are several competing theories of gravitation. Newtonian physics says that gravity is a constant force that is generated by large quantities of matter. Einstein's theory of gravity posits that space is curved and celestial bodies create indentations that everything follows, illustrated by the classic balls on a tablecloth demonstration. Then there are newer and much less accepted theories of gravity like the shifting theory of gravity or the inertial theory of gravity. Some people even believe that gravity can be quantified into individual particles known as gravitons, although no one has ever detected a graviton. All I am trying to say is that there is no reason that one theory, though it may be imperfect (such as Einstein's general relativity), cannot be applied to the world, especially if it has been backed up by scientifically gained evidence. The reason few people believe in gravitons is because no one has seen them. The reason lots of people believe in relativity is because there is a body of scientific evidence out there that supports it. Thus it is with evolution versus creation.