Do you think the Great Pyramid in Egypt is evidence of a technologically advance

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Is it ancient civilization and/or alien intervention? The Great Pyramid is constructed with approximately 2,300,000 limestone and granite blocks. Weighing between 2.5 and 50 tons each, these stone blocks had to be quarried from the earth....The known tools would only barely cut through limestone and would be useless with granite. No archaeological examples of iron tools are found in early dynastic Egypt, yet even if they were, the best steels today have a hardness of only 5.5 and thus are inefficient for cutting granite. The unsolved problem of how the 2,300,000 very heavy blocks were transported to the building site of the pyramid is even more mystifying. How were the blocks taken to the nearly 500- foot height of the pyramid’s summit? These stones were dressed on all six of their sides, not just the side exposed to the visible surface, to tolerances of .01 inch. They are set together so closely that a thin razor blade cannot be inserted between the stones. Egyptologist expressed their astonishment of this feat by writing, 'Merely to place such stones in exact contact would be careful work, but to do so with cement in the joint seems almost impossible; it is to be compared to the finest opticians' work on the scale of acres.' The sides of the pyramid are lined up almost exactly with the cardinal points of the compass. The accuracy of this alignment is extraordinary, with an average discrepancy of only about three minutes of arc in any direction or a variation of less than 0.06 percent. ...Altogether these measurements show that the builders knew the exact dimensions of the planet as precisely as they have been recently determined by satellite surveys. They also found that the form of the pyramid somehow mysteriously kept foods preserved without spoiling, sharpened dull razor blades, induced plants to germinate and grow more quickly, and hastened the healing of animals' wounds. http://www.sacredsites.com/africa/egypt/great_pyramid.html