In 1934, the entomologist Antoine Magnan after a long study of Bumble bees, concluded that the body shape, the size of the wings, the frequency of the flapping of the wings, and as per the vast knowledge of Aerodynamics and Physics known to man the bumble bee should not be able to fly.
This is a classic case. Knowledge is a barrier. It tells us what we cannot do or achieve.
Fortunately, Magnan forgot to impart this knowledge to the bees, so, they kept flying.
