So the story of Moses out of Egypt has definitively been disproven by the word 'think.'
I would encourage people to use critical thinking skills while reading this article.
Of course slave labor was used over the thousand year period these structures were built. Perhaps not all the workers were slaves but some percentage of them were.
This article merely points to the existence of some popular contractors at the time. Contractors who most likely used their own slave labor.
What's the definition of a slave in Egyptian times? What would prove or disprove their existence 4000 years ago? This is not a logical or reasonable article. It makes far too many assumptions. It should be rewritten and the findings described without the interpretation of the author.