possibility is not infinite it is bound by experince and other such factors, as you so elquently put before humans cant fly.

god, believe in him or not, is a construct of man a reflection of himself in other words if god sees us as flawed we look upon ourselves as flawed

now to perfection - if a thing is made for a puporse it cannot do it is imperfect ie a pen that doesnt write is flawed. Can you say with certainty that the pen you use is without flaw. If it is why bother pursueing other tools with which to write its a waste of resources. or in another way is your hand writing ledgeable, how much are you going to write down, perhaps if you use something else you will more effectivly capture what your thinking can you truely say it is perfect.