Have we been visited by Aliens?

[LongDriver]

@OldGreyFox

And there were no trade unions in those days…

Ah, but they did have a whip round for the Master’s birthday

[Mad-Ralph]

@LongDriver

They were cut with a saw but not as we would recognise it. The cutting medium was sand & water poured into the cutting slot from above as the copper blade did the work. A small-scale reconstruction is shown below without any saw tooth marks as the copper does not need teeth. Remember, this was in granite and not sandstone which is much softer.

Crikey, they must have had a few blisters sawing through 4.5 million tons of stone with one of those.

[Psmith]

Even in the early days there were always some bright sparks about eg: Euclid and Pythagoras

[Psmith]

This reminds me of that 60’s thing when Von Daniken said the Nazca lines had been drawn by astronauts.That’s was wrong too of course but it did help sell his book

[Bruce]

Actually this is a bit of a furphy, they were clever enough to taper the stones very slightly so that only the very edge fits very precisely a much easier task, behind that edge they just place fill to keep the face of the stone at the right angle. It wasn’t that difficult.

[Bruce]

@Mad-Ralph

The Egyptians don’t have the ability to build the pyramids today.

Of course they do, they would just use more modern building techniques and take a lot less than 30 years to build it.