The moment I realized the Great Pyramid had 2.3 million stone blocks
I was reading a book on Egyptian engineering last week and it hit me how huge that number really is. 2.3 million blocks, each weighing between 2 and 80 tons. That means they had to place one block every 3 minutes for 20 years straight, no breaks. I never stopped to do the math before and it blew my mind. How did they even manage the logistics without modern tools, let alone the workforce? Has anyone else run across a number in archaeology that just didn't seem possible?