I'd like to help you guys out with your understanding of evolution - but I don't have the time right now to go into the details. Having said that, I think you're both falling for the primary misconception about evolution (which is understandable) due to Darwin's use of the phrase 'Survival of the Fittest'.
This is fine for grade-school explanations, but we should be thinking about these things along the slightly more grown-up lines of multi-dimensional, dynamically changing
phase spaces,
fitness landscapes and remembering that 'Survival of the Fittest' should sometimes be replaced with 'Survival of Everything that's not completely non-viable in it's current environment'.
When you've understood evolution in these terms, eyes, flagellum and man all become inevitable (yet still awe-inspiringly wonderous) results of a complex system, rather than the results of a piecing together by an invisible deity.