One service I used to work on processed business-to-customer and business-to-business emails almost exclusively, so you could see a recurring weekly pattern, bu

One service I used to work on processed business-to-customer and business-to-business emails almost exclusively, so you could see a recurring weekly pattern, bumps throughout the day when the US east coast, US west coast, Asia, and Europe woke up, and spikes at the top of the hour from automation. So one day we got a new boss, and he called me into his office in a panic so I could explain why his chart of the traffic kept going up and down. Took about four tries, but I think he eventually got it. I also recall seeing someone push a global update to that system that was packaged wrong, and watching the graph gradually drop and flatline as 20,000 VM hosts across the planet stopped taking traffic. That had its own subtle beauty, in no way diminished by the fact I was just a bystander and couldn't get in trouble for it.