I'm an artist, and believe that any two given individuals will not share an identical color perception.
Being an artist has nothing to do with the accuracy of this belief.
I've always had issues with infinity and transcendental numbers. For instance, pi is said to be transcendental as it cannot be expressed as the ratio of two integers; yet, in a sense, is the ratio of two numbers - the circumference over the diameter.
There are two problems here. First, irrational numbers are the ones that cannot be expressed as a fraction of integers. Transendentals are defined as numbers that are not algebraic. All transcendental numbers are irrational, but the converse does not hold.
Second, pi is defined as the ratio of circumference to diameter, true. This would only be a contradiction if both the circumference and diameter could be integers at the same time, which is impossible.
This got me to thinking about numbers as mere concepts. Numbers that we count on our fingers and toes have a greater "reality" than such oddballs as radical two and i, yet those oddballs seem to me much more useful.
You are confused about what numbers actually are. Some classes of numbers are useful for certain tasks, but there is no sense in which one class is more 'real' than another. I recommend Mathematics, Queen & Servant of Science by Eric Temple Bell for a wonderful overview of mathematics. Chapter 2, "Mathematical Truth", is relevent to this discussion. Also, see Godel, Escher, Bach, Chapter 11: "Meaning and Form in Mathematics".
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I love this place. At first I said to myself, "Duh!" Then I was like, there's a trick involved... :) Perhaps I can reward a thought with a thought... isn't it also true that a pound of feathers will weigh more? ;)