The simplest explanation is that humans built it. Alien technology is not required to accomplish building the pyramids. But that isn't quite the same as the evidence required to prove it. Having said that, it's an unnecessary question, just as relevant as any other random and baseless theory. It's just not worth discussing.
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Notes from Tired Egyptian Whose Job Is Explaining That Humans Built the Pyramids | Spyke
The simplest explanation is that humans built it. Alien technology is not required to accomplish building the pyramids. But that isn't quite the same as the evidence required to prove it. Having said that, it's an unnecessary question, just as relevant as any other random and baseless theory. It's just not worth discussing.