I'm always suspicious of someone whose career could directly benefit from (or at least is directly related to) a great "discovery" about ancient Egypt.
Davidovits and his Geopolymers.
Dunn and his Giza Power Plant.
Neugebauer's stellar alignments.
Houdin and his Architectural Tunnels.
One might make the argument that it takes an engineer to recognize engineering principles, or an astronomer to recognize stars, but it is far more likely that we are looking at cases of psychological projection. Davidovits has explained how
he would build the pyramid. Dunn has explained
why he would build a pyramid. Neugebauer explains how he would mathematically align a pyramid feature to the stars. And Houdin has explained how somebody equipped with a 20th century degree in architecture and really nifty 3-D computer modeling capabilities would build a pyramid.
I also question the claim that the notch is "two-thirds of the way up the northeast corner--precisely at a point where Houdin predicted there would be one". There are four sides to this pyramid. If I read it right, two sides could have served as his starting point (the two sides facing the quarries). The slope of the ramp tunnels, the depth of the ramps within the structure, and the height of each tunnels are all variables that can be manipulated in an ad hoc fashion to make a ramp tunnel hit just about any point you want on any side of the pyramid you choose.
Also, his illustrations show the corner turning notches to be an average of twelve courses tall. The notch in question on the actual pyramid is eight or nine courses deep.
(courtesy Jon Bodsworth)
By his diagram, the roofs of his tunnels are an average 7 or 8 courses high, out of an average of twelve courses cut out for each notch. Ergo, we should be able to see the top of his tunnels in the notch he has claimed as evidence for his theory. In fact, we should see at least the top half of the tunnel, clearly exposed. No such opening exists (or I'm sure it would have been better documented than somebody in recent history seeing a fox scamper between two blocks).
There are other problems, some of which Colin Reader brought up on the EEF list, but I'll leave those for others to elucidate.
Anthony
You can lead a horse to water but you can't make him think.