(August 4, 2019 at 8:54 am)Nomad Wrote:(August 3, 2019 at 11:01 pm)John 6IX Breezy Wrote: <bullshit>
You do realise, idiot, that the "what good is half an eye?" argument was debunked by Darwin himself. We actually have a pretty good handle on how and why eyes have evolved and continue to evolve amongst animal species. It's not actually hard to figure out that something which gives you a huge advantage to start with and improved that advantage at each stage it improved has come to be.
The issue with sensory organs is that they are there to inform or guide behavior. Given that perception is a highly interpretive process, possessing "half an eye" as you call it, will most likely lead to behaviors that are disadvantageous. Now its worth mentioning that I consider something to be "half an eye" when it is compared to the rest of that organisms structures, not when compared across organisms. So I wouldn't label phototaxic bacteria as having "half an eye" because they come equipped to adequately transform that information into movement. There is a balance of structure there, despite its minimal composition.
