The Difference Between How Children and Grown-ups Think

Child: When is my skateboard going to be here?
Grown-up:  I’m not sure.  It’s coming by UPS.
Child: What time does UPS come?
Grown-up: UPS usually delivers around 10 in the morning or around 4 in the afternoon.  So, expect it to come around 4.
Child: Why 4?
Grown-up: Because then if it comes at 10 you’ll be really happy.
Child:  If I expect it to come at 10 and it comes at 10 I’ll be really happy.