Lambert has left work at 7 pm every Friday night since he started at that company. He’s always the last to leave. For the last six years he’s shut the door behind him and locked it on his way out of the building. Sometimes he’s forgotten to shut off the light in the back office, but his boss turns a blind eye to it. That’s because Lambert is so reliable with everything else. His boss can also shut the light off on Saturday, since he almost always comes in to work on Saturday. He has always been able to count on Lambert to shut down the factory on Friday night perfectly.