[Jugurtha]

I worked on a project where a device was to be paired to Bluetooth Low Energy device by a non-technical user and send that data somewhere through 3G dongle. It had to be untouched, update its own software, work all the time, recover when there was any problem (lost BLE connection, poor internet coverage, sync data, take a shot at a deliver-once scheme, handle connection errors, handle device swap, and a variety of other issues - I had actual, literal, nightmares related to UTC and time zones -

We used the actor model for that project because it made it easier to deal with exceptions. Even things that usually worked didn't at some point, and to take into account all that could go wrong would have made it much more diffcult because there was always something new that went wrong.