No, your "mind of God" argument just don't work. Intelligence and understanding of intelligible motivation has not changed dramatically. Reading any ancient story, we see all the same motivations, humor etc as today. I don't think Homer or Plato would be unable to understand why we do things today. He may not know how a Mac works but he could guess at why it was built. This is not the case for aliens and EVIDENTALLY POINTLESS visitations. Ok, these crafts contradictory with FTL or 10 dimensional technologies. It doesn't make sense. They travel through 10 dimensions but don't land?? Or maybe you do believe in the MIB universe, where Chinese restaurants are filled with aliens (totally serious)?