Humans cannot fly if they have paper or fake wings because humans do not have the power to keep themselves in the air. A human does not have the strength to flap fake or paper wings fast enough to create enough lift to overcome their weight.
We cannot create enough lift to overcome the force of gravity (or our weight). It's not only wings that allow birds to fly. Their light frame and hollow bones make it easier to counteract gravity. Air sacs inside their bodies make birds lighter, which enables smoother motion through air.
Possibly, if the wing is long enough, is at the gravitational center of the body, and is supported by structures strong enough to keep its shape in flight and light enough to be taken into air. However, this will be really really hard.
Wings on any flying animal are what would be arms or forelegs on a terrestrial or aquatic animal. A winged human would lose the use of his hands, a significant handicap. Wings glued on to the back and shoulder muscles would not be functional.
All animals have genes that decide and control the development of organs. Due to these genes, it is impossible to find humans born with wings. Our limbs will develop according to the instructions encoded in such genes.
“As an organism grows, its weight increases at a faster rate than its strength. Thus, an average adult male human would need a wingspan of at least 6.7 meters to fly. This calculation does not even take into account that these wings themselves would be too heavy to function.”
A pure flying wing is theoretically the lowest-drag design configuration for a fixed wing aircraft. However, because it lacks conventional stabilizing surfaces and the associated control surfaces, in its purest form the flying wing suffers from being unstable and difficult to control.
Humans would not fly even if we had hollow bones in the entire of our skeletal system because humans do not possess a circular breathing pattern as the birds do and the anatomy of humans is unsuitable for aerodynamic purposes such as flying.
Yes, they can, these are called lifting body aircraft. They maintain directional stability using the control surfaces near the tail. If you like retro documentaries, here's one on YouTube about lifting bodies done by NASA.
Even if humans did have wings, we wouldn't immediately be able to fly. To fly, we would also need the right body size and metabolism. Metabolism is our body's ability to use fuel (such as from the food we eat) to make energy, which helps us move. Birds have very higher metabolisms than us.
The weight of an organism increases at a faster rate than its strength as they grow, so, an average adult would need a wingspan of approximately 6.7m to fly. Even if we did have wings with the required wingspan, they would be way too heavy to function.
The wings generate most of the lift to hold the plane in the air. To generate lift, the airplane must be pushed through the air. The jet engines, which are located beneath the wings, provide the thrust to push the airplane forward through the air. The air resists the motion in the form of aerodynamic drag.
Officials at Tampa International Airport said a Cessna Citation was at 27,000 feet near St. Petersburg when the pilot lost the left winglet and part of the wing. Airport officials said the jet had departed from Arkansas. Eagle 8 was flying by when it managed to capture footage of the jet's landing.
While these examples show that it's technically possible for a non-pilot to land a plane in an emergency situation, it's important to note that they are extremely rare. In both cases, the passengers were able to communicate with air traffic control and receive guidance throughout the landing process.
Bones do repair themselves to some extent. But they can't regenerate or replace themselves fully for the same reason that we can't grow ourselves a new lung or an extra eye. Although the DNA to build a complete copy of the entire body is present in every cell with a nucleus, not all of that DNA is active.
Famously, the hyoid bone is the only bone in humans that does not articulate with any other bone, but only has muscular, ligamentous, and cartilaginous attachments. Given this peculiarity, it has been described as “free floating” [1].
Eventually these too will disintegrate, and after 80 years in that coffin, your bones will crack as the soft collagen inside them deteriorates, leaving nothing but the brittle mineral frame behind. But even that shell won't last forever. A century in, the last of your bones will have collapsed into dust.
In fact, it is beneficial. Allowing the wings to flex improves aerodynamic stability. The aircraft is more streamlined and experiences less drag. It helps provide a smoother ride for passengers and minimize turbulence.
Wings wobbling during turbulence is a result of pretty straightforward physics. As the plane encounters higher air density, the wings are lifted and the plane gains altitude. Areas of less air density cause the wings to bend back down as the plane loses altitude.
Wings are, however, getting bigger – the result of efforts to raise fatter, more profitable birds.
A long, furry tail like a macaque's could be useful to wrap around ourselves for warmth, like a built-in scarf. And if we had evolved to hibernate during the winter, our tails could come in handy as a fat-storage system (a strategy employed by some non-primate mammals, such as beavers).
Lifespan. Humans will almost certainly evolve to live longer—much longer. Life cycles evolve in response to mortality rates, how likely predators and other threats are to kill you. When mortality rates are high, animals must reproduce young, or might not reproduce at all.
So humans cannot grow gills because they already have a respiratory system that is much more developed than aquatic animals and also being land inhabitants they do not require gills. Thus humans cannot grow gills.
But the most incredible thing an Israeli pilot may have ever pulled off with the venerable F-15 came in 1983, when pilot Ziv Nedivi and instructor Yehoar Gal managed to land the top-tier fighter after losing its entire right wing in a mid-air collision.