I know! I know! It's the Intelligent Puller! That's much better than General Relativity or Quantum Theory, so we can forget those. After all, they don't explain everything, but Intelligent Puller Theory does.
You don't believe? Drop a book. You saw it drop. Therefore, the Intelligent Puller must have pulled it towards the ground.
Umm, it's just you, pulling one out. How do General Relativity and Quantum Theory address the cause of gravity? Gravity operates consistently because it too, is intelligently designed. The forces and cause behind it are still an object of science, and if the theory of intelligent design is correct, science will, if it pursues the proper course, arrive at an intelligent designer as the ultimate agent behind its predictable behavior.