It's not only humans that are amazing like this. Watch a common house cat... it will happily jump 10 feet to land on a fence 1" wide, etc. I don't even know how you would write AI to do this...

The cat-family have springy legs, also as four legged they are more balanced, hence the acrobats

How about the outstanding navigational skills of birds and tortoise using the earth's magnetic field to navigate the open sea where everything looks the same 360 degrees (you could tell i watched too much wildlife documentaries)

Of course, the truth is that all perception is a synthetic judgment resulting from the interplay of the exchange of quantum states at the fundamental level of existence, and that there is no true transcendence to need to explain. No one really kicks a football, but many of us experience some quantum state changes in the fabric of spacetime as a football having been kicked.

Quantum entanglement? really???

Humans learn to walk and measure distance towards their desired goal before they're four years old.

If you pay attention, you'll notice you often have to(and do) change your stepping-distance, just move to a toilet that's two doors and a hallway away from you.

How about the outstanding navigational skills of birds and tortoise using the earth's magnetic field to navigate the open sea where everything looks the same 360 degrees

Well if you can perceive the magnetic field of the earth, it doesn't look the same all 360 degrees anymore!

Saw some nature show where they claimed some birds actually get this information fed into the same areas as vision, so they should really "see" the magnetic fields. Must look awesome

Its fun to imagine what the world would look like with different senses. They say dogs live in a world of smells.

And LSD is probably nothing compared to how a mantis shrimp sees the world.

On body control, my favorite example of this is when Mythbusters tested the expression "Like a bull in a china shop". Turns out bulls are surprisingly agile, and could run around their simulated china shop at great speed without knocking anything over, with just centimeters to spare. All thanks to amazing neural circuits trained since birth moving around that huge chunk of meat.

The taken-for-granted maths the brain does to accomplish this feat must be so extreme. And we don't feel mentally taxed!

This is all achievement of so called "little brain" - what is a feast big part of brain in the very middle of the brain. It is the actual only part of brain that is inerved with the rest of the body, the rest of brain, gray brain, that we think with, is just a bunch of isolated nerves that can give abstract issues to little brain at most, and recive stuff back (pain, senses?).

The little brain also learns, things like motoric memory, and learned stuff vs. firsttimer stuff must be of known issue to everyone.

I think the simple answer is that the brain -- or rather the nervous system, as a little known fact is that *some* brain-like processing (not just reflex) related to your legs actually happens in the base of your spine -- has a remarkable capability to get good at things in a way that transcends rote repetition.

Most of us who kick a ball at all learn to do so in early childhood. Those with/around kids might have noticed how difficult/awkward a child's first time kicking a ball around is, but as they are very young they probably also attribute it to the child simply having lesser-developed motor-skills on the whole (which is certainly partially responsible, you don't develop very fine motor controls until later in life).

But have you ever watched an adult go bowling for the first time? Its the same sort of pattern (3-ish steps in rhythm, micro-adjustments, synchronized to a swinging limb to roll the ball down the lane), and many (most?) adults having the benefit of years of other experiences and of developing finer motor controls in general, will perform the task entirely awkwardly. What's possibly more remarkable, is that if they pay attention to what they're doing right/wrong, and try to improve, they will usually be rid of their awkward approach by the end of their second game, even if their score isn't improving.

Our brains are wired to get better at things through experience, as a matter of evolution, which is the ultimate survival skill -- adaptability. Many scientists who study early humanoids agree that is was probably the better adaptability of homo-sapiens that led our species to win out over the others, some of which had advantages over us (homo-erectus was more strongly built, others were smaller and had lower energy requirements) -- granted, there was also some interbreeding and so some of those DNA strands likely live on.

Other animals have their own muscle memory too. These animals, no matter how simple they are, can execute one thing really efficiently and fast.

One advantage of biology over hardware technology. Biology can evolve, discarding cells it doesn't need and evolve new ones. Evolution process is slow, but it gets there.

Software gets the job done too, and that's how we have all these AI technology, facial/voice recognition etc. But software is software, it can evolve to do software things. You can't expect it to grow more resistors and steel.

How does the human brain - on instinct mode - accomplish this

Reiterating -- THIS IS NOT INSTINCT.

If it was instinct, then a feral child who was never taught to walk or crawl could instinctively do the task without any training.

By the time you're able to start directing the ball -- perhaps age 6 or so -- you've had about five years with a mix of guided training and practice at walking and running and kicking.

It is "instinctive" only if you discount five years of natural practice walking and running on your feet every day.

(I've got similar comments about those who discount musicians and artists, "It is all talent". It discounts the years of practicing and lessons and study and work, dismissing it as something innate. It is not, it takes work. The work and practice may often be fun and the results worthwhile, but work and practice nonetheless.)

In computer science, neural networks can be used to approximate complicated equations. You don't need to know anything about what the equations is. You just measure inputs of some unknown complicated function and the outputs and use them to train the neural network. The neural network learns the function and can be used to approximate the learned function.

I'd imagine this is how we manage to do the feats we do. Our brains remembers what what angle we hit the ball at and sees the resulting angle the ball moves away at. Using these inputs and outputs our "neural networks" learns these complicated functions without actually computing any exact values. They just approximate the math.

Human > Computer.

Score one for mankind