A hummingbird’s wings beat up to eighty times per second.
They can rotate in a complete circle, allowing it to hover
in mid-air, fly forwards, backwards, up, down, sideways
and even upside-down. The laws of physics say it would
be impossible for a hummingbird to fly.
Clearly nobody told the hummingbird!
The Prosperous Coach by Steve Chandler & Rich Litvin