Joseph Davidovits

"So we started with mud bricks that were used in the enclosures during the 2nd Dynasty. They did not have stone [working, hard metal] tools so... they used mud bricks. Then... the invention of the first limestone bricks by agglomeration. The technology improved into bigger and bigger... limestone blocks, and then suddenly, 800 years later, they had tools to cut the stone. No! They returned to pyramids made of mud brick. So this is something is not capable of explaining. It is something that ic technology is capable of explaining, essentially because here we had a stop of the use of this technology to make stone."

"They turned back to mud because mud bricks is also a replica of incarnation, in the materials that belong to the Khnum divinity."

"What about the Cheops pyramid? ...We have the core, this is the mass, more than 2 million tons ...made of ...reagglomerated limestone. But ...in the ...inner ...it is made of granite ...carved stone. Why? Cheops... is Khnum Kufu... agglomerated stone. However, Pharaoh is the king of the two countries. ...[T]he pyramids must be the representation of Egypt,... which means ...the replication of agglomerated stone for the northern part ....and in the south, natural granite that is the carving technology. So we have agglomerated limestone for the core, and the King's chamber is made of split granite that is dressed [cut] ...not carved granite."

"For Chefren, same problem, the core is made of agglomerated stone, but this time... the granite... more easily ...was only for the casing of the first and second steps that is made of ...blocks of granite that are split into two and are incorporated into ...the natural step."

"Mykerinos has a core... of agglomerated limestone and the first steps were covered with a casing... also made of split granite, not dressed [not cut]."

"Based on the present scientific proof of the absence of a "geopolymeric" signature or any "synthetic" composition in the same Lauer casing stone, originally used as a "smoking gun" to support the concrete-pyramid hypothesis, the proposed geopolymer hypotheses of Davidovits and others, or any "new" hypothesis for that matter really has no practical credibility (let alone their astounding extension to both core and casing blocks, and granite/granodiorite/basalt/travertine/quartzite blocks, columns, pavements, and other architectural artifacts associated with the Great Pyramids) unless detailed and systematic research is done by a diverse group of scientists on actual pyramid samples of known provenances. A valid hypothesis must rest upon a reliable set of unquestionable data."

"Despite much reported evidence of the use of zeolitic (ic) chemistry in the ancient technologies, its promising future in the modern cast-stone technology and as innovative building materials for sustainable development, there is no evidence of use of geopolymeric cement in the pyramid stones. Based on unassailable field evidence in favor of a geologic origin for the pyramid stones, and equally convincing results of the present laboratory studies confirming the "geologic" origin of the casing stone samples from the Great Pyramid of Khufu (originally used as evidence for a man-made origin), ...the Egyptian pyramids stand as testament to the unprecedented accuracy, craftsmanship, and engineering skills of the Old Kingdom (2500 BC) stone masons!"