Honestly gubberningbody, this pretense of you knowing how ignorant the rest of us are, and how we're not getting it is, is condescending.
You've gotten an excellent summary on the key drivers of evolution with natural and sexual selection as well as a solid description of the way chance can come into play with bottlenecks and genetic drift.
Yes the mutations themselves are to the best of our knowlegdge undirected, but the selective pressure on the phenotypes that result from those altered genotypes tends to direct in someway. Now that direction may not always be towards complexity, but it sure has generated alot of diversity.
Let's have something more relevant to the discussion instead of insults.