Sorry for double post but....
Theorys might still be true but not completely correct. A good example would be newtons law of gravitation which said objects attract each other. If the object was bigger, it would attract everything within range. Einstein modified this theory by saying larger bodies curve others. Its like putting a bowling ball on the bed and it terraforms down. Then you roll the marble near the edge where it starts to terraform down. You see the marble goes around it a bit then it goes to the middle. This could relate to rogue meteors in our solar system which go towards the sun. I do think there may be a Gay gene but not as in the exact description as the theory states.