Will the people of the future fly?From the perspective of biological evolution, the possibility of humans evolving the ability to fly in the future was extremely low. Flight required many conditions to adapt to flight, such as wings, hollow bones, extremely high metabolism, etc. The trajectory of human evolution was to adapt to the current ecological niche, and a quarter of the energy consumed by humans was used to replenish the brain. The brain consumed a lot of energy, and it was difficult to support the energy consumption required for flight at the same time. If one wanted to evolve the ability to fly, they might have to lose their intellectual advantage, which was unlikely to change drastically in the short term. However, with the development of science and technology, it was possible to fly with external equipment such as drones and flying cars. For example, the development of the low-altitude economy formed an industrial chain around emerging technologies such as drones, flying cars, and urban air traffic. In the future, people might take flying taxis and other equipment to fly.
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People used to flyIn ancient times, although there was no ability to fly freely with the help of mechanical devices in the modern sense, there were the following related situations:
- Flying in myths and legends: There are many descriptions of flying in ancient myths and legends in China and other countries (such as ancient Greece, Egypt, India, and Arabia). For example, in China mythology, the Rain Master Concubine was depicted as a goddess who held a jade board, wore a phoenix crown, and wore luxurious clothes to fly in the sky. Her duty was to control the rain, and flying in the sky was an ability given to her by the mythology. These myths and legends reflected the ancient people's desire for flight.
- The embryonic form of flying devices: The ancient China people created some devices that could be regarded as the embryonic form of modern flying devices. For example, the lantern was created around 1000 AD at the latest. At the end of the Yuan Dynasty, Tao Chengdao was the first to think of using rockets to fly. He tied 47 homemade rockets to a chair and held two big kites in his hands to try to fly. Although he sacrificed his life when the rockets exploded, it was a brave attempt by the ancients to fly. In addition, there were also inventions in ancient times that embodied the concept of flight, such as bamboo dragonflies. Moreover, the ancients were inspired by natural phenomena and the flight activities of birds and insects. They yearned for flight, but due to the limitations of backward productivity and production methods at that time, it was difficult to achieve true flight like in modern times.
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Can people fly in space?In space, people were in a state of microgravity or weightlessness. The concept of "flying" in this environment was different from on Earth.
In the microgravity environment of space, people could move in some ways, such as using the handrails, foot pegs, and other facilities inside the spacecraft to push, so that they could float inside the spacecraft. In a sense, it could be seen as "flying." If the astronauts wore special spacesuits for extraterrestrial activities (EVA), they could use jetpacks to control their direction and speed, which was similar to flying.
Therefore, people in space could achieve something similar to "flying" through specific means.
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Can people fly in space?In space, a person could be in a floating state and look like they were flying. This was because space was a microgravity or weightless environment. There was no gravity like the Earth's surface that bound people in a fixed position or caused them to fall.
For example, when astronauts walked in space outside the space station, they would move in this microgravity environment, as if they were "flying" in space. However, this kind of "flight" was different from the concept of flight on Earth, which relied on one's own strength to overcome gravity. It relied more on external forces (such as jet propulsion devices) or the initial launch force to move and float in space.
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People can fly to the skyHumans couldn't fly like birds or airplanes because they didn't have the body structure that birds had to adapt to flight, such as light, strong and hollow bones, strong and flexible muscles concentrated on the chest and wings (humans didn't have wings), and feathers that could provide lift and maintain body temperature. They also didn't have the structure of airplanes to generate lift and propulsion.
However, humans could fly with the help of tools. For example, an airplane generated lift through the difference in airflow velocity between the upper and lower wings (according to Bernoullian principle, the airflow velocity was large and the pressure was small, and the airflow velocity was small and the pressure was strong). The engine of the airplane provided power for the forward movement of the airplane. For example, the turbine jet engine relied on the combustion chamber to inject fuel into the combustion chamber, and the gas flow was ejected from the spout to generate thrust. The outer duct of the turbine fan engine provided most of the thrust, and so on. The helicopter relied on the rotation of the propeller to stir the air to generate lift to achieve flight. In addition, humans could also fly into the sky with the help of hot air balloons, airships, and other tools that relied on buoyancy.
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What level of people is the fly3 suitable for?The Fly3 was suitable for runners who needed a cushion and wanted to improve their performance. It could be considered for those who wanted to improve their performance in training or competitions. However, it was not particularly suitable for sprinting. If there was no better choice, it was a relatively good option. At the same time, it was a thick-soled carbon plate running shoe. The carbon plate was added to allow the runner to achieve faster speed and was not suitable for jogging. It wasn't light, and people who were sensitive to weight, such as speed training or race days, might need to consider it. In addition, the nike running shoes were not stable when entering the curve, so before choosing them, you should refer to your own training and competition road conditions. In short, from the perspective of running ability, it was suitable for runners who had a certain foundation in running and had a need for speed and cushion, but did not pursue the ultimate sprint performance.
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Why do people long to fly?There were many reasons why humans desired to fly.
Spiritually speaking, the soul was believed to come from God and longed to return to the high heavens. There was a holy kingdom in the heavens, which might be the spiritual source of humans 'desire to fly.
From the perspective of psychology and dreams, flying represented the transcendence of self-limitation and the control of magical power. In ancient times, humans envied birds that could fly and worshipped them. The totem worship that combined birds with the sun also reflected the yearning for flight. In real life, people had their own direction and destination that they wanted to pursue. Flying symbolized being able to move forward towards their goals. Even if they were at a low point, they would have the courage to explore the unknown journey with a direction.
From the perspective of human development, the seed of flying had long existed in human consciousness. With the development of human society, people's desire to fly continued and manifested in different forms. In fantasy works, extraordinary people always had different meanings of "wings" to achieve flight, which also reflected the desire of human beings to fly. In addition, although the human body structure was not suitable for flying like birds, there were some special experiences (such as the experience of the soul leaving the body when he was sick and unconscious) or religious stories (such as the prophet Elijah riding a whirlwind to heaven, etc.) that seemed to have the experience of flying. These may also deepen the desire of humans to fly.
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Why can't people fly?There were several reasons why humans could not fly. In terms of body structure and physiological functions, compared to birds, humans did not have wings or feathers. Their body structure was relatively heavy and could not generate enough lift to support flight. Human bones were not as thin, light, and hollow as birds, and the muscular system could not provide enough strength and stability to support flight. Furthermore, humans had heavy structures such as the brain, internal organs, and teeth. Their body weight was relatively heavy compared to their body size. At the same time, humans could not use their wing muscles to drive their wings to flap quickly in the air like birds to generate enough speed to overcome gravity and air resistance. They could only rely on their leg muscles to run and jump. They could not accelerate in the air.
In terms of physiological needs, humans needed basic physiological needs such as breathing, eating, and defecation. These needs were not compatible with flight. In addition, humans could not adjust their body temperature and metabolism rate according to different heights and temperatures to increase the lift force by using the air density. It was even more difficult to fly in the air with high temperature and low pressure.
Although humans couldn't fly naturally through their own physiological functions like birds, with the help of aircraft, helicopters, drones, and other aircraft, using the principles of flutter and mechanical structure design to generate lift, and using the engine to provide propulsion, they could achieve flight.
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