Bees can’t fly
A popular story in science folklore is that the aerodynamics of bees suggest that they should not be able to fly. It was hotly debated in at a time when human flight via aircraft was being mastered (around the 1930’s). Because physicists and aerodynamic specialists had started to develop theory of ‘predictable flight’ with machinery, they believed their knowledge applied to all forms of flight.
Of course bees do fly. A bee is very small. And, at that size, air acts as a much more viscous fluid than it does for airplanes and helicopters. So the laws of aerodynamics are quite different for bees and other insects. But it took some time before this was understood and that new theoretical models were developed relative to the size of the thing of flight.
The point for entrepreneurs is important, especially at a time when technology is challenging existing business models. So the next time someone tries to put the kybosh on your new idea or startup remember that based on yesterdays knowledge, bees can’t fly.