Federal Express's entire model depended on one nightly miracle. Every package in the system flew to Memphis, sorted in the dead of night, and left by dawn. The sort kept finishing late. Jobs were threatened. Planes waited on the tarmac.
Management tried the mandate first: more supervision, more pressure, explicit expectations. The sort kept finishing late.
Then someone looked at the paycheck.
The sorters were paid by the hour. The longer the sort took, the more they earned. Federal Express was paying, with precision and at scale, for the problem it was trying to solve. The workers were not failing. They were doing exactly what the incentive asked.
The fix cost nothing. Pay by the shift, same total money, go home when the sort is done. The sort started finishing early.
Diocletian understood this in 301 AD, and got it wrong. Prices were rising across the empire, soldiers on fixed pay were suffering, and he issued the Edict on Maximum Prices: over one thousand goods and services, ceiling prices carved in stone from Egypt to Britain, with the death penalty for overcharging.
The goods left the market. Sellers would not sell at a loss, so they stopped selling. Lactantius, who was there, writes that much blood was shed over small and cheap items before the law was allowed to lapse in embarrassment.
The most gifted administrator Rome ever produced had commanded an outcome instead of redesigning an incentive. A price is not a behavior. It is a signal. You cannot execute a signal for disobedience.
The Federal Express sorters were Diocletian's problem with better documentation.
Here is the question the Roman Operating System asks before any intervention: what is the system actually paying for? Not what you intend it to pay for. What it is, in fact, rewarding. The answer is always visible in the behavior you are trying to change.
Mandate what you should incentivize and you will get Diocletian's market: goods that vanish, blood shed over trifles, and a law lapsing in embarrassment.
Redesign what the system pays for and you get sorters who go home early.
Next week: two things history remembered by the wrong names, and what that costs the original.