For example, Socrates is a particular (there's only one Socrates-the-teacher-of-Plato and one cannot make copies of him, e.g., by cloning him, without introducing new, distinct particulars). Redness, by contrast, is not a particular, because it is abstract and multiply instantiated (for example a bicycle, an apple, and a particular woman's hair can all be red).In the nominalist view, everything is particular. A universal at each moment in time, from the point of view of an observer, is a set of particulars.

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