Encounters with the Third Kind

While strolling through the local B&N store, I had an interesting conversation with my middle child.

Sophie: Can we go back to play at the trains?
Me: No, we're going to pay now. Do you know where we go to pay?
Sophie: Yeah. **She points to our left.** It's where all those humans are in line, right?

I'm sorry, I suppose I should be aware that my own daughter came from another galaxy!