Before I answered that, I asked her to think of ways that could enable humans to fly...
In two minutes, she came up with these ideas...
1. they can cast a spell to grow wings
2. sit on a bird's back
3. sit on the airplane
4. be a pilot
5. use lots of balloons to lift you up like in the movie "Up"
6. use a parachute
7. sit on a kite
8. be thrown into the air by Mr Strong (one of the Mr Men)
9. be in a rocket on the way to space
10. jump and flap arms so fast that you fly
And immediately after that, she asked again. "Why do ducks have wings if they cannot fly?"