How to understand that ubiquitous concern is knowledge?

1872 One day, in a hotel in California, Stanford and Cohen had an argument about whether the hoof touched the ground when the horse was running.

Stanford believes that a horse runs very fast, and its hoof should be empty at the moment of jumping. Cohen thinks that if a horse flies on all fours, won't it become a frog? There should always be a hoof on the ground.

The two men held their own words and were red-faced, and no one could convince anyone. So they asked the British photographer McBride to be the referee. McBride couldn't figure it out, but the photographer was a photographer after all and still had some ideas. He placed 24 cameras at the same distance at one end of a runway, aiming at the runway; Nail 24 stakes at corresponding points at the other end of the runway. A thin thread is tied to the stake, which passes through the runway and connects the camera shutter.

Everything is ready. Mcbride let a horse run from one end of the runway to the other. When the horse ran, it tripped over 24 thin threads in turn. The camera took 24 photos, and the difference between two adjacent photos was very small. The photo shows that the horse always lands when running, and Cohen wins.

Afterwards, someone unconsciously pulled out this long series of photos quickly, and a "miracle" appeared: the static horses in each photo overlapped with each other to form a moving horse, and the photos came alive. The "embryonic form" of the film has finally matured after arduous experiments.

Spiritual enlightenment

Pay attention to learning everywhere, and the door of discovery is around us. As long as we are full of curiosity and thirst for knowledge, pay attention to every moment in life, be frank and have seen it, argue and theorize about it, and seek help and exploration in time, we can open the hidden door of discovery.