Why does >= return false when == returns true for null values?

Question

I have two variables of type int? (or Nullable if you will). I wanted to do a greater-than-or-equal (>=) comparison on the two variables but as it turns out, this

Answer 1

Because Equality is defined separately from Comparability.
You can test x == null but x > null is meaningless. In C# it will always be false.