Egyptologists believe that the pyramid was built as a tomb for fourth dynasty Egyptian Pharaoh Khufu (Cheops in Greek) over an approximately 20 year period concluding around 2560 BC. Initially at 146.5 metres
http://en.wikipedia.org/wiki/Great_Pyramid_of_Giza
I will no longer challenge your preconceived notions with facts.
Have a good life.
“Egyptologists believe that the pyramid was built as a tomb for fourth dynasty Egyptian Pharaoh Khufu (Cheops in Greek) over an approximately 20 year period concluding around 2560 BC. Initially at 146.5 metres”
1. That - 20 years - is an opinion, not a fact.
2. No one elected “Egyptologists”, or any self-appointed group claiming an exclusive membership thereto, to speak for everyone who has studied the question.
3. And, there are other learned opinions that disagree with that opinion - “20 years”. The “20 year” time frame does not begin from official ancient records in Egypt but is instead based on guesses about possible construction methods, calculations of the work-effort required for those efforts and then backing into another guess about how many workers “could have” achieved that particular effort in a given period of time. Altogether, that does not construct a fact, but a mere opinion.