You interjected the "or maybe aliens" yourself. Nobody else even hinted at it. You reveal that you never had any intention of engaging honestly.

Maybe I'm reading too much into the claim that these objects were not created by the ancient Egyptians, and the assertion that they were 'machined'.

Nobody suggested they were not made by Egyptians. You made that up, too.

We don't know which generation of Egyptians did the top quality work. As already noted, inscriptions only establish a lower bound on age, but no upper bound. Evidence strongly suggests the means to do such work were lost, early on.

"Machined" describes the precision of the work. If you know how to get that without precision equipment, reveal it.

Then what did you mean by “who really made” the boxes you said had been “precision-machined”.

Maybe read exactly the post you replied to?

Here, I will reproduce it for you: "We don't know which generation of Egyptians did the top quality work."

Now you may ignore it in both places.