Now did he cut out and carve that stone or concrete block with his copper chisels.
Those techniques have been demonstrated years ago. He was demonstrating that those weights could be moved by manpower without necessarily hordes of slaves. The big question that has elicited Coast2Coast type theories of Ancient Aliens and such was all about the weight. There also has been a serious suggestion with some chemical support that the blocks of at least one pyramid are actually a form of poured in place concrete.