No good without evil

Connections List
 * Formal problem of evil
 * Problem of Evil
 * Higher Good
 * Def Good and Evil
 * Genesis 3
 * God uses sin

Scope
 * No good without evil as response to problem of evil
 * Other thoughts on the fx claim

Topics
 * Argument
 * Rebuttals
 * Valid similars

Argument
 * One response to the problem of evil (which I disagree with) is that you cannot have good without evil. That is, precisely, good objects cannot exist unless evil objects also exist.

Rebuttals I don't find this argument neccessary or valid. Valid similars
 * Have you ever seen a bad sunset? Yet we appreciate their beauty. (Ok yeah you've seen a smoggy polluted sky)
 * We might not have a sophisticated vocabulary about colors if the world was red, but the stimulus would still hit our eyes. Ref Illiad (or is it Odessey) and use of 'wine dark sea'.
 * We might also appreciate magnitudes. One olympian is good, but another is even better.
 * If good and evil are arbitrarily scoped out of vector space and are opposed, then as soon as one is defined, the other is also defined. This may have some support from Genesis 3 where you will be like God knowning both good and evil. Satan didn't just say evil, he said good and evil, possibly indicating they had not defined good either.
 * God, in his infinite wisdom, has decided that some will not be saved. This is evil, sort of. But his purposes are good. So God's plan may demonstrate properties similar to this argument.
 * It is possible that we are unable to appreciate good without seeing evil. In this case appreciation might be a higher good, appreciation gives glory. Cf Gen 3 again. More loosely: we would not know what light was without dark. If everything in the world was red we wouldn't have the idea of color. Imagine you are trying to show your child that eating a ton of candy is bad. If you always prevent him from overeating, you will show that eating less is ok, but he will not be convinced until he feels the effects of disobeying in his own stomach.