It looks like you've picked up the wrong end of the stick, you maybe didn't read what I wrote, we are both skeptics of the official account. It is not an assumption of mine copper saws were used, it is a "Deduction" made in the experiment, the experiment specifically states copper bladed saws, and the stone cut in the experiment was granite. Maybe they thought using a harder stone than sandstone would prove the point, I have no idea what their reasoning was, none of it makes sense to me, this is the whole point I was saying, so no need to think you are contradicting me, we are saying the same thing. Careful with that loose cannon!

Btw, Guedelon is nothing to the pyramids. It proves nothing. As I said, the cut faces are just one of an infinity of impossibilities in the pyramids. I am telling you this as a long experienced chartered Engineer. Another thing I noticed, in the grand pyramid, when I visited it, is the cutting of a rectangular shaft, the main tourist entry shaft, diagonally, at an angle of about thirty degrees or so, for about 60m through all the stones, into the heart of pyramid, it looks like after all the stones were laid. No way could they have cut a perfectly mirror flat faced, rectangular tunnel, through all that stone, in a perfect rectangular, straight tunnel using any kind of stone splitting technique, that sounds just as ridiculous as copper bladed saws to me.

You've maybe been to Guedelon, but have you been to the pyramids? Are you an Engineer?

You get that we are deluding ourselves as a species whilst unwittingly destroying the planet, right? Does it not occur to you that the builders of the pyramids knew this would happen in the future, and the pyramids are designed to withstand this onslaught?

How long do you think guedelon will last? Hundreds of years? Thousands of years? Tens of thousands of years? The pyramids are obviously built with that in mind - endurance. We have never come close to anything like that, never.