In multi-valued logics, the truth value can be other values as well. For example, one could use a value between 0 and 1 to say how much it is true. Zero would mean that it is completely false, and one would mean that it is completely true. When the car is orange (and we define orange as half red, half yellow), the truth value could be 0.5 because the statement is half true and half false. it is also used in critical thinking.