"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."