Take the block out??????? It's in the middle of the bloody pyramid.
And how much more convincing evidence is there Ush? I mean, a lot is guess work and circumstantial estimates. This graffiti MUSt have been written during construction, that is without ANY doubt.
The other "evidence" I know about dating the pyramids is the location similarity to Orion. Now, for one, those so-called exact alignments aren't that exact. And secondly, it only says something about the locations, not the actual construction of the pyramids themselves.
But I would very much like to know what evidence you refer to.
Obviously you have no idea how much work that is. Besides, the graffiti isn't that interesting. They know what it says, it's not that they've never seen quarry makrs like this. It just says that the block is intended for the pyramid of Kofu. The thing t'hat makes it interesting is in fact that it continues behind another block, thus proving it to be genuine.