One of the things I've always found so fascinating about the study of classical physics is the ability to understand large concepts through observation of simple, everyday phenomena. One of my passions is billiards (or more accurately 8-ball), specifically for that reason. I can visualize the exact direction an object ball will travel when contacted at a particular spot by the cue ball, and it's always correct (providing that I do contact the intended spot). I can further visualize what effect adding spin, in various directions, will have on that basic point-of-contact rule, and although I may misjudge the magnitude of the effect, the general effect always works. When banking a ball off of a cushion, the angle of incidence always equals the angle of departure (minus a small degree that is absorbed by the cushion), just as was explained by my high school physics teacher. These are simple, observable laws which, when scaled, have allowed us to propel objects across the unimaginable, yet calculable, distances of the solar system and precisely hit targets too small to be seen by anything less than large telescopes. It's all wonderfully simple and exact and makes the world appear to be explainable through experimentation and observation, in short, science. It has led me to believe in science as faithfully as some believe in God.
But there are problems. Why, for example, is it so that spinning a ball will cause anything on the surface of that ball to be propelled off into space (at precisely calculable angles, of course), yet the earth (merely a huge ball) does not throw us off to become part of the dust cloud that exists within our solar system? Furthermore, why does that dust cloud seem to be drawn into balls to form planets, etc. in direct opposition to the observable rule that applies to a slobber-soaked ball you throw for your dog?
The answer, of course, has something to do with gravity, and it's effects have to be calculated into the flight paths of our spaceships in order for them to hit their intended targets. Yet gravity is not clearly evident on any scale that I can observe directly - other than falling objects.. Not even the tinyest speck of dust is attracted to a spinning ball here on earth.
This adds a layer of complexity to the universe that, although it may be answerable by adding onion-like layers of theories to the laws prescribed by effects that I can observe directly, makes me suspect that science may be better at constructing elaborate, but limited, theories than it is at truly explaining a Godless universe ruled by chance. We're still searching for the elegant, cohesive theory of everything that Einstein so strongly believed must exist.