This one of those things that seems anachronistic but it’s not. Much like the complaint tablet of El Nasir
Yeah people tabulated data thousands of years ago, crazy. In fact you probably do less personal accounting than people 200 years ago let alone ~5000.
This is one of those America brained things where you don’t realize that there are these things called seasons that affect resource extraction and in societies where you didn’t have the global imperial might to cajole resource trade in off seasons and have the logistical technology to deliver it, you had to actually plan for winter or die.
It’s why almanacs were a thing for centuries, here’s a Roman one inscribed on a stone pillar:
In practice they’ll wholly generate things and lie through their teeth in court and to the copyright office – the government will take them at face value.