I've now got a copy of M&R, and on this topic they are quite clear.

Quote

The plug-blocks for (A) could not have been stored but in the great gallery. In fact they are 1.195 m. high and 1.05 m. wide; corridor (H) is 1.17 x 1.05 m. in section and the passage (L) leading to the crypt is only 1.11 m. high. Thus the blocks were not put either in the queen's chamber or the crypt or in the corridor (H). Even if there had been only the three plug-blocks existing today, they could not have been kept in the part of the corridor (H) open to the great gallery due to their total length (they could not have been placed upon one another) and the fact that they would have almost completely blocked the upper opening of (A). The only place where the plug-blocks could have been kept was on the great gallery floor between the benches and beyond the open part of the corridor (emphasis added). p. 120

So, given this clear dimensional reference of the widest point of a plug-block (41.338583 inches) we then have to decide what exactly the shape of the entire shaft is, how it might have been affected by the shape of the blocks, and then perhaps run a test with similar blocks to see if it actually would have worked or not.

Or, we can just accept the blatantly obvious fact that the pyramid of Khufu was his tomb, the blocks, just like any other plug-stone blocks in other tombs, slid down from above to seal the passageway, and be done with it until real contradictory data comes along.

I'll stick with 2.

Call me whatever names you like.

Anthony

You can lead a horse to water but you can't make him think.