What Birds See [evolution of the eye]

We humans customarily assume that our visual system sits atop a pinnacle of evolutionary success. It enables us to appreciate space in three dimensions, to detect objects from a distance and to move about safely. We are exquisitely able to recognize other individuals and to read their emotions from mere glimpses of their faces. In fact, we are such visual animals that we have difficulty imagining the sensory worlds of creatures whose capacities extend to other realms--a night-hunting bat, for example, that finds small insects by listening to the echoes of its own high-pitched call. Our knowledge of color vision is, quite naturally, based primarily on what humans see: researchers can easily perform experiments on cooperative human subjects to discover, say, what mixtures of colors look the same or different. Although scientists have obtained supporting information from a variety of other species by recording the firing of neurons, we remained unaware until the early 1970s that many vertebrates, mostly animals other than mammals, see colors in a part of the spectrum that is invisible to humans: the near ultraviolet. ...

You can play 'I know you are but what am I?' all day long if you want. It will not help your case.

Before going further, we must clarify what exactly you mean by 'evidence'? Your definition of 'nothing' is a separate issue, but we'll avoid that complication for now.

Do you mean concrete evidence? That would be irrelevant since all concrete evidence is the same and can be interpreted both ways. Nothing to discuss there.

Do you mean interpretations of evidence? If so, perhaps you should try refuting my arguments wrt ERV's because I certainly brought those to the table just a few hours ago. If this is not what you mean by 'evidence', then you must not have been paying attention (since I am responding to multiple evos here, it would be a good idea for you to actually read the other responses before making claims).

Present your counter-arguments and we'll see whether your 'evidence' is anything more than metaphysical wanderings about unobserved past events. Careful though. You're likely to prove my point for me.

Or do you have some other definition of 'evidence' in mind that I have not covered above?

"Do you mean interpretations of evidence? If so, perhaps you should try refuting my arguments wrt ERV's because I certainly brought those to the table just a few hours ago."

In which post?

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