...its just simply put not possible to polish granite that smooth to that percise of a surface flatness with the technology of that time
This statement is
de facto false, since they were in fact polished to that level of precision with technology available during their time. Obviously. Unless you are advocating the idea that the entire pyramids were transported through time somehow...
Also, I thought there were many theories expounding beyond the old "slaves with ropes" method. I have heard of ideas having the blocks crudely cut and then "mortared" in place, blocks lifted with hydraulics, etc.
On the other hand, I would love to find convincing evidence of alien intervention. But it would have to be
extremely convincing. You know, the old "extraordinary assertions require extraordinary proof" thing. So far, I have seen nothing that requires any such intervention.
For example, any stone of equal or greater hardness can be used to form and shape any similar stone. Therefore, they had the material necessary to create the blocks. As to transport, didn't someone do a simulation whereby they built a boat of bundled reeds and transported a stone block of several tons? Remember, there very well could have been water lapping right at the edge of the pyramids back then. For that matter, people may have dug canals to facilitate the movement of these stone blocks. Did you happen to see the documentary showing this "reed" boat moving a huge stone block? If not I will try to find a link...
Once they got the block from the quarry to the building site, all they had to do was push one block against another after covering it with chalk or similar substance - wherever the marks were left, that is where you needed to chisel down, until the blocks were essentially "perfectly" flat and integrated.
Remember, they had 50,000 plus indentured servants (or paid laborers, whichever) to help...
Why would you prefer a different explanation? I think the ancient Egyptians were d*mn clever for what
they did, why try to make them share credit with aliens?