Only Six Days?

brennakimi writes:if the rainbow did not exist before the flood, then the properties of water and possibly a great many properties of the universe were VERY different. the sky was probably not blue prior to the flood. if there were no rainbows, then it can be assumed that before the flood, water could not refract light. the sky is blue because water refracts light. the ocean is blue because it reflects the color of the sky. further, there is the question of whether this change with the creation of the rainbow was one of the properties of water, but perhaps also in the properties of light.

Greg Koukl writes:A young-universe creationist is in a very difficult spot. If he holds that God created the light in transit, he also has to hold that we have no way of knowing that anything further than 10,000 light years away actually exists. We can't see it. We're not seeing it; we're seeing an image that God created in transit. The light from it won't reach us for a billion years.
You see, the argument from young-earthers regarding star light is that God not only created the galaxies in deep space, but He also created all the light between that star and earth. This is why we can see them now even though the universe is young.
My question is, how do you know the stars are really there? You don't see the light of anything that existed. You're seeing an image created in transit of an event-- watch this-- that never took place.
If all we're seeing is an image that God created in transit, then the only way we're going to see the actual thing that exists is if we wait around another billion years for the light of the actual star to reach us. Who of us believes the Lord will tarry that long? Not a billion years. Which means we'll never see it, will we? We'll never see what God actually created, not the thing itself.

Greg Koukl,Stand To Reason website writes: By the way, part of this discussion entails the notion that colors are merely physical wave lengths of light. The argument that colors are wave lengths that cause a chemical reaction in your eye that is physical is meant to argue against the notion that colors can exist or be apprehended in some kind of non- physical realm. My illustration that I gave was to make the point that colors are not wave lengths because it is possible to see color when there is no light. If you can see color when there is no light, then colors can't be light. They must be something different than light. They may be associated with light, but they must be different than light.
Here is the illustration I gave. Close your eyes and picture your mother. You are a child. She's in the kitchen washing dishes. Have you got the picture? What color dress is she wearing? What color is there? Some say red. Some say blue. Some say green or white. The point is, there is a color in your imagination. You can conjure up a color with your mind. Note I didn't say brain because your brain isn't conjuring up the color. Your mind is. How do I know it's not the brain? Because you cannot crack your brain open and ever find your mother in there wearing a certain color dress. What you are seeing is not something physical. If is was physical, it would occupy a physical location. You can't find it physically. She's not in there. Nor is the color in there. Not in your brain. It is in your mind. Therefore, it is not physical. It cannot be equated with brain activity.