"There is no good explanation for the existence of the Causeway"

seeing as the evidence suggests that virtually all the Pyramid complexes from the Old Kingdom have them, including those constructed out of MUD BRICKS, the only suggestion I can provide is you improve on your one dimensional definition of Good.

Considering we are discussing the Beliefs of an entire race of humans, or rather you are throwing them aside like so much bathwater,t I'd like to think you can at least allow that a ritual explanation cannot be ruled out entirely.

While it may also have been employed as a materials ramp, the fact that it was not disassembled after use, support my outrageous notion to boot.

Warwick