Suppose The Great Pyramid of Giza is one of the Seven Wonders of the Ancient World and the only one to remain largely intact. It is believed to have been constructed as a tomb for the Pharaoh Khufu and is estimated to have been built over a 20-year period around 2560 BC.
Can we infer that "The Great Pyramid of Giza was built by aliens"? Yes, no, or maybe?