Of the three theories on how the Great Pyramid was built, in descending order of acceptability, the most suitable theory is Clifford Wilson’s followed by Joseph Davidovits’ and Erich Von Däniken’s argument. Clifford Wilson’s theory is the best because he illustrates how the pyramids were built and provides the evidence to prove his theory, however; this is unlike Joseph Davidovits’ theory because Davidovits does not fully answer questions that arise concerning his theory. The three theories have similar points, but contain very different ideas on the construction of the Great Pyramid. This is obvious in Clifford Wilson’s argument where he is repeatedly disproving Von Däniken’s th