Khusi-to build in reagglomerated stone, and this is what we get as sentence in the Famine Stele: "with these products (that are depicted in the... co… - 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.

I am a research scientist specializing in low-temperature mineral synthesis. In 1972 I founded the private research company CORDI (Coordination and Development of Innovation), and, in 1979, the Geopolymer Institute, both in France. At the Geopolymer Institute a new branch of chemistry that I named ization. I currently have more than twenty-five international patents for geopolymeric products and processes. My products are made... by large manufacturers. The products have many diverse applications.

[I]f they over exploited the palm trees in the production of the ashes... then they got into an ecological disaster because... [i]f there is no more palm trees, there is no more agriculture, and... the end of the pyramid construction. ...[T]his technology, even though it was a sacred one, was dangerous.