Evidence of design .... ?

Oh? Why is that? Because light exists? For the same reason, we can be sure that a mass-sensitive organ will eventually exist, able to detect objects by the gravity the generate. Or even senses that we can't conceive? Like, oh, say "Smision"? I don't see that eyes are any more certain than any other conceivable organ.

I was referring to a more remote kind of sense - where I could walk into a room and know the masses of everything in it, the same way I percieve the colors of the objects.The inner-ear doesn't have the same kind of noise-reduction our other senses exhibit, so it's not really a useful sense for determining spacial relationships and stuff. All it detects is the Earth.