> But for every number between 0 and 1, there are two correlating numbers (x+1 and x+2)

There are an uncountably infinite number of ways to correlate numbers in any open set of real numbers... they all have the same "count" in that they can all be correlated to all of the other reals with unlimited simple relationships.

Example: 1/2x is also in (0,1) just like x+2 and x+3 exist outside of that range. So is 1/(pi*x)...