The Washington Monument is made of stone and taller than The Great Pyramid. There are seven churches made of stone that are taller than The Great Pyramid and much more technical marvels than a pile of rock. Look at these pictures of the outer walls and tell me how regular the blocks are. I doubt that there are even 2 of the same dimensions. We don't know if there is cut stone all the way through the pyramid or if the center is stone rubble. Several people have wanted to drill into it to find out but it hasn't been allowed yet. Logistics are everything today. I provided the statistics for the amount of containers shipped out of Shanghai and the total weight of stones in the pyramid being less than 3 days of shipping. There are many other ports that handle large volumes of containers also. We can cut rock into any shape and size. Many kitchens and have stone countertops. Some have stone floors. There are many ways to cut rock today, from wire saws to circular saws to chainsaws. Here is a video that shows cutting granite and a second one that shows cutting the slabs. They could cut all of the stones and simply set them in place. And now YOU know!