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In Portal, GLaDOS says, "2 + 2 = 4. IN BASE 4". I have established that that is true with a base 4 calculator, but why? 2 (in base 4) still equals 2 (because that means 2 ones) so 2 + 2 should still equal 4. Why is it 10? If it was 22, I would understand; 20 = 2 fours or 8 and 2 = 2 so (in base 1...