My daughter to the core

How do I know Ellie is my daughter? Because every night I walk around the house and shut off lights in every single room in the house. The lights seem to turn themselves on whether we are using that room or not.

It's not that I remember having had an evil impulse for artificial lighting as a child. What I do remember is being told over and over and over to turn off all the lights that I wasn't using.

Since it is clearly an inherited genetic trait, I'm having a hard time being angry with Ellie over it.