I'm just a member of the general public with no religious or personal axes to grind. Except one, whenever I attend a public lecture about astronomy and related fields, there are references to absolutes such as the microwave background being the edge of the Universe, that reek of conjecture. Is this just the culture of Science projecting a united visage of intellectual certainty? I enjoy the public programs at the Rose Center, but it always knocks me out when the driver pulls back the projection of our position in our solar system, then in our galaxy, ad infinitum, that is until we get to what we project as the edges of the universe. Though Science be great, though the imagination of Man is great, when we see the gargantuan distances of space with it's multitude of possibility, a posture of certainty always reeks to me of a clear sign of our intellectual limits. Biological limits?