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A dirt ramp

Problems with this theory

A. You need to get the dirt from somewhere and make it hold in place during construction - where are the 'dirt quarries'?
B. The volume of 'dirt' needed to build a low inclination ramp is many times the volume of the pyramid being built. Logistics problem!
C, After building the pyramid 'core' the outer skin of dressed stone was added top down which would require a ramp on all four sides, a different ramp shape, or a whole new theory.
D. After the Pyramid is completely built, you have to remove and dump the 'dirt.' Where are the dumps?

I know that there is evidence of ramps at some pyramids - probably less than ten - but the question remains for all the others. Back to you.

A. You need to get the dirt from somewhere and make it hold in place during construction - where are the 'dirt quarries'?

Your kidding right? It is dirt. You just scrape some up. a few thousand years of Nile river flooding and any holes they dug it out of are long gone.?

B. The volume of 'dirt' needed to build a low inclination ramp is many times the volume of the pyramid being built. Logistics problem!?

Not that many times. the top of the ramp only needs to be as wide as one stone.?

C, After building the pyramid 'core' the outer skin of dressed stone was added top down which would require a ramp on all four sides, a different ramp shape, or a whole new theory.?

Er... no it would not. One ramp to the top and some ropes to lower the stones down to any side you are filling in.?

D. After the Pyramid is completely built, you have to remove and dump the 'dirt.' Where are the dumps??

It is dirt. You just spread it around and no one notices. Or you dump it back in the hole you dug it out of. Ever notice how houses with basements don't have a huge pile of dirt sitting next to them? Go look up the dirt mounds made by native americans near St Louis. It is not that hard to come up with a lot of dirt when you are in a major river valley.

2560 BC. Over the course of 4000 years, I’m not terribly surprised that all but the most scant evidence is long gone.

Certainly there are still many arguments about how things were done, but a simple and realistic mechanical theory is very hard to disprove.