I find the Austrian School of Economics really interesting.
Particularly books written by American economist Murray Rothbard, who talks about free markets, government (particularly government intervention) and inflation.
There's a very short book you can read called "What has Government Done to Our Money?”
They actually don't know, but mathematically in order for them to build it within the historical time constraints, it had to have been done one block per minute.
Which some say is impossible with the technology they had, sparking conversation that there's more to the history of the pyramids than we think.