If you don't know who built the pyramids, it doesn't mean it is a result of random amount of random matter being randomly thrown on random times, I have never seen someone who suspected that Pyramids were randomly built, you would only think that someone who claim Pyramids were randomly arranged of randomly shaped in blocks to be in psychological denial.
And Pyramids are way more simple than human brain.
Well then why just brain? I would have loved the ability of flying like birds or swimming underwater like fish or running like horses. These features seem to be not as complex as brain. The creator could have added these features to the most powerful creation on the planet.
And Pyramids are way more simple than human brain.