

Mathematically clean and tidy would be a better description. This system is particularly close to the natural harmonics that either occur when planets form, or that planetary systems tend towards.
It’s akin to watching a group of metronomes move into sync. Mathematically, it’s not that special. To us monkeys, that particular pattern feels a lot better and cleaner.
Scientifically, it’s quite useful. By judging the age of the system, we can tell a lot about early formation and planetary movements. As the article mentions, it’s likely that planets form in such a resonance, then get knocked into chaotic orbits. However that’s not been tested. This system would let us test some of our models against reality.
The pyramids were built by skilled labour. One of the options for paying taxes was to work on public works. It was also seen as a religious event, akin to modern missionaries.