Speculation 2: Slope Carrying Said First, a large slope was constructed outside the pyramid to pull the stones up. Pile a layer of slope, lay a layer of stone, gradually raise the pyramid. However, the slope of this slope must not exceed 7 to 8 degrees. At the height of the pyramid, the slope would have been a mile (1.6 kilometers) long and very steep at the top. The materials used to build such a slope alone would be equivalent to building a pyramid, which would also be extremely wasteful and therefore unlikely.
Speculation 3: The Pouring Theory In 2000, Frenchman Joseph Davidovis offered his startling insight, claiming that the pyramid's monoliths were man-made. David Deweese with the help of microscopes and chemical methods to analyze the structure of the monoliths, according to the results of the tests came to the conclusion that the pyramids on the stone is made of lime and shells by artificial pouring of coagulation, the method is similar to today's pouring of concrete. It is assumed that in ancient Egypt, the construction of the pyramid is likely to be the use of "zero" approach, the first will be well-mixed concrete into the basket, and then lift the pyramid under construction. In this way, with some skill, it can be poured into a monolith.
Speculation 4: water transport that some scientists believe that the ancient Egyptians used the "water transport method", that is, the use of water buoyancy, this statement was first put forward by the Egyptian Antiquities Conservation Committee Chairman Hawass, 1980 Hawass core sampling, found a rock face at least 50 meters deep, which may be be a harbor excavated during Egypt's Fourth Dynasty. Later, others also discovered waterways connecting to the harbor. They suggested that water transportation could have been used to move boulders.