...and that's one reason why I like it. Consider: the selective inefficiency of complex organisms like mammals is one reason why we become more complex, according to a recent paper published in Genome Research. In simple, rapidly reproducing organisms like our single-celled cousins, gene duplications get eliminated reasonably quickly because they're a resource drain. But in complex organisms that tend to have smaller populations and longer generation times, these redundant paralogs can survive, and this often leads to specialization as paralogs diverge via mutation. I mean, it's not all that surprising to consider gene duplication as a significant mechanism for introducing variation and complexity (once you realize that it happens, anyway), but the idea that these occurrences depend on our poor selection is kind of a mind-bender.
...on an unrelated note: looking at this post, I realized that I'm falling prey to sesquipedalian loquaciousness, i.e. I'm using more big words than I need to. That's not good, even for my writing seminar--I bet profs get annoyed by roundabout expressions and overly complex language just as much as any other reader. Time to cut back. (...I think it's working!)