...degrees of difficult. I think faith is about having joy in spite of our circumstances due to the fact that it contributes to the glory of God in a way that we may or may not ever know about...not about believing if I just make it though this circumstance then I have a great reward coming to ME. I do...but not necessarily in the form of earthly success...or happiness...just joy which is an entirely different thing.
A school of fish exhibiting Swarm Intelligence (SI). The fish follow very simple rules, and although there is no centralized control structure dictating how the individual fish should behave - there is yet an emergence of an "intelligent" unified behavior, unknown to the individual fish.