What's missing is, what did he do with that information? Promotions for those who worked weekends and stayed late like him? Did he hold a grudge for those that didn't?
If you manage to write a presence simulator, creating the subconscious impression you are always in the building, but currently somewhere else cause emergency.. that promotion is yours. Idiots want to be gambled.
https://www.amazon.com/Hard-Drive-Making-Microsoft-Empire/dp...