Sphinx carbon dating
The debate over when the Giza complex was constructed is still ongoing.
Erosion patterns from the Sphinx enclosure suggest a far older date than subscribed by Egyptologists and there are several at Giza discoveries from before the 4th dynasty that clearly suggest the complex was in use before the pyramids are said to have built.
It is said that Manetho's main goal was to prove to the Greeks that the Egyptians were the world's oldest people, but that he faced competition; Berosus was trying to do the same thing with his homeland, Mesopotamia, while the chief librarian of the Alexandria library, Erastosthenes, also claimed great antiquity for the Greeks.
It was Manetho who compiled Egyptian history into the thirty dynasties we are familiar with today.
For those dynasties which left us almost nothing, like VII-X and XIV, Manetho is considered the most reliable authority, even though the lack of evidence has caused some to ask if those dynasties really existed.
Unacceptable predecessors such as Hatshwpsut and Akhenaten and the Pharaohs from the Amarna period are omitted from the list.The two versions do not agree on names, or on the counting of years.To give just one example, Syncellus, who copied Africanus' list, wrote, "The twenty-fourth dynasty, Bocchoris of Sais, for six years: in his reign a lamb spoke [a short gap in the manuscript] 990 years." Meanwhile Eusebius wrote, "Bocchoris of Sais for 44 years: in his reign a lamb spoke.This is in accordance with traditional theories about the pyramids.The stone for this temple is believed to have come from the sphinx enclosure.