Pyramid Theory

A book I'm reading asked me to find the strangest theory of the creation of the Pyramids at Giza I could think of. I came up with this: The Egyptians would first use a sturdy wooden cart to haul around bricks. They would then create small levers and cranes that have wheels. They'd use any stones they are not using yet to form a sort of stairway. Then they would place flat wooden pieces on the stairs to make a sort of ramp. They'd then drag up the stones and cranes/pulleys and place them in the right areas.