Why do some communities see him building a tall building and seeing his building collapse? What is the driving force behind the continuous self-operation of the community? What is the value that the community cannot see? The world has been suffering for a long time, where will the community go in 2021?
01 Why is the community born?
Humans have been dreaming of flying to the blue sky since ancient times, from Nuwa mending the sky, Chang'e flying to the moon to Prometheus stealing fire from the sky... So many myths and legends are the good wishes and dreams of mankind looking forward to flying into the sky. hazy fantasy.
At that time, many people believed that in order to fly, people must have wings, because those animals that can fly basically have wings, so many people believe that the essence of flying is "wings"...
So many people imitated birds, fitted themselves with wings, and then flew down from a height, of course never succeeded. Until one day, someone discovered the essence of "flying", not having wings at all, but using the wings to use the power of airflow!
Until 1809, British scientist Kelly published a famous paper entitled On Aerial Navigation. Kelly estimated the relationship between speed, wing area and lift by observing the wing area, weight and flight speed of birds, and proposed aerodynamics. study. The failure of early humans to imitate bird flight was due to the lack of basic understanding of aerodynamics. Therefore, humans gradually established a theoretical system of aerodynamics, and under the guidance of the theory, it was no longer a dream to take off an aircraft. Then people invented the plane. The flight principle of the plane is: when the object is moving fast, that is, the greater the flow rate of the fluid, the smaller the pressure; the smaller the flow rate, the greater the pressure.
The wing of an airplane can make the flow velocity under the wing lower than the flow velocity above it, resulting in a pressure difference above and below the wing, so there is a lift: this is the essence, when human beings really see through the country email list essence of flight. Time to really fly.
100 years later, the American Wright Brothers, the inventors of the aircraft, said that "when we designed the aircraft, we completely adopted the principles and calculation methods proposed by Sir Kelly".
Everything has appearance and essence, and most people only see the surface of things. And only a few people who can see through the essence of things can completely control the whole thing.
Humans will not be able to fly into the blue sky just because they are equipped with wings. Only by following aerodynamics can they have the opportunity to make the plane soar into the sky. In the same way, it is not like pulling customers together like others, sharing some pictures and videos, and doing two activities, you can all respond and unite. The only thing that makes a community invincible is to discover the dynamics of the community.