Refresh Rate Programming Error

Okay folks. Here is a lesson in how we learn from our past mistakes.

Decades ago programmers made a dangerous and often fatal "refresh rate" error in programming the control system for a powerful machine that aimed x-rays at a patient's tumors. It took a long time to discover the error and a long time to correct it.

A refresh rate error was detected at a dealerless electronic roulette game and players were making some really good money at a variety of casinos but when the casinos got suspicious the game was shut down and the programmer error detected promptly and corrected promptly.