In Robert Temple's 1 book "Egyptian Dawn", the author exposes a series of problems with Egyptology that he found while exploring Egyptian temples and ruins. When he applied a technique called surface luminescence dating 2 to date stones of Menkaure's pyramid he found that they are too old; the pyramid couldn't have been built in Menkaure's lifetime.
Also when comparing the tomb of the last king of the Second Dynasty (which has impressively low technology applied to it) with the Pyramid of Djoser (the Step Pyramid, built by the first king of the Third Dynasty), there is a clear difference in technology. Such technology couldn't have evolved in the span of 20-30 years that separates them, says Temple.
I couldn't find any direct criticisms of this specific book, so my question is: are these real problems? Or is Temple speculating here? And if a respected dating technique indicates that some monuments and temples are too old, and if there are problems with the progression of technology from one dynasty to another, how come I can't find sources talking about it besides Temple?
1 Yes, he is the same guy who wrote a book about aliens coming from Sirius and bringing knowledge unavailable to normal humans, although Egyptian Dawn seems to be a more sober book.
2 First applied to ancient monuments by prof. Ioannis Liritzis, a Greek scientist.