[stupidcar]

Although brains cannot do it "out of the box". Most kids take years of practice to achieve decent dexterity in even simple manipulation tasks. And learning a new skill like guitar in adulthood makes it very clear that, however sophisticated your capabilities in other areas, you have no innate ability to perform complex physical tasks well without a long grind of practice.

So yes, brains are incredible in what they can eventually achieve, and the fact that the calculation involved becomes hidden from conscious awareness can make it seem "effortless", but when you consider the sum of time and effort spent practicing physical tasks over a typical human lifespan, it's really anything but.