Well if you're going to get picky bakerman, I don't think they calibrated time in years, Months, days and hours, they weren't even aware that the earth went round the sun. Therefore a year could have been any length of time, even the lifespan of a human.....

Exactly ! No question about it, when it came to working in stone, the Egyptians were geniuses.

For those who have not studied ancient Egyptian technology, the saws they used to cut stone (once it was removed from the native rock) were made of very heavy copper. The saws were suspended on a scaffold, and 2 men shoved them back and forth. it is surmised that they used harder stone "dust" as the cutters. That harder stone became imbedded in the copper saw. Thus, the somewhat "softer" stone was easier to cut.

Oh, I almost forgot. using modern day electron microscopes it has been determined that the copper mined in ancient Egypt had arsenic in it. That made the copper harder than we use today.

below you will see a partially completed saw cut (in basalt) from the east side of the Great Pyramid

Must have taken forever .

Well if you're going to get picky bakerman, I don't think they calibrated time in years, Months, days and hours, they weren't even aware that the earth went round the sun. Therefore a year could have been any length of time, even the lifespan of a human..... The desert now provides oil from the forests that were once abundant, so the sediment was washed down by seawater (an early example of Global Warming ) perhaps they floated the large stones into place using boats. And labour was cheap in those days, 100,000 slaves could be employed for the cost of a MacDonald's......But I did present a serious explanation, and unless people are not capable of thinking outside the box, they will always be astounded.

Barry, the technology required to produce those granite boxes is not at all difficult. Physically difficult ? Absolutely , yes. But not technologically difficult.
Example: if given thousands of laborers, I could easily create a perfectly flat stone foundation, (out of bedrock) that measures 10 hectares square. You may ask how ? Simple. I'd start by digging a shallow square trench in the bedrock and fill it with water. As you know, water seeks its own level. It is then only a matter of chipping away and polishing the bedrock stone within the square. Eventually, I'd end up with a precisely flat and level bedrock, that varied only a 1/100th of an inch out.
The same applies to the granite boxes at Saqquara. simply invert the box lid and pour water into the cavity. Now, all that needs to be done is to slowly chip away and polish the bottom so that the water is at a precise depth everywhere. Reinvert the lid and place it on the coffin.
In 2007 I visited Saqquara Serapeum. Difficult to achieve those boxes ? Yes. But not impossible.

Oh, and let us not believe those who would say it's impossible with todays technology. That is a myth created by people who make money writing about aliens.

A very interesting subject bakerman, can you tell me though ,
Where is the nearest source of limestone to the pyramids ??
I think this is important due to the logistics involved if it were far
away?
I ask this as looking at the terrain around the pyramids l see no rocks
or mountains ??

Donkeyman! 🤔🤔🤔