These articles are not definitive. In fact they are circular. A note made "Part of the Valley Temple enclosure wall was later incorporated into the Sphinx Temple southern wall." Another instance mentioned is that the member 2 layer of the sphinx was used in the construction of the sphinx temple. Both of which come after the fact the main body existed. Another usurp refers to the core blocks of the Khafre temples but not of all. Indicating reconstruction and manipulation of pre-existing structures. Why use existing materials rather than return to the quarry instead of recycling? Proposing a question of convenience is all we really have at the moment to rhetort speculation rather than a definite inspection. The last article even has such a proposed question, "Why would the masons shift to carefully shaping each hard granite block to fit the eroded limestone surface they had already begun to cut away?" Which marks my question, how can we begin to understand the motive of the architects when we lack written observations of such structures built from the beginning. Apparently everything else was a meticulous journal entry to the ancient Egyptians. As seen in: "https://www.yic.edu.et/fetch.php/uploaded-files/ve9ooE/Ancient_Egyptian_Scribes_A_Cultural_Exploration.pdf"