True story;
When my daughter was in about first grade, she came home and said...
"do you know Dad, why when a flock of geese fly in a 'V'...that one side of the V is longer than the other?"
I then proceeded to try and explain aerodynamics at a basic level, how being in front is tiring, that
'drafting' helps the whole flock cover longer distances...and that a non-equal
V helps the entire flock do that.
After a minute, I could see her eyes glazing and then she simply stated....
"No Dad, it's because...there's more geese on that side." 
