|Actualism: in relation to worlds the thesis that only our own world is real. - Counter-position essentialism.|
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Existence / actualism / Nozick: possibilities that are not realized, do not exist. - What exists or does not exist are certain possibilities. Possibility / existence / Nozick: the structure of all possibilities does not exist itself, nor does it not exist! - II 155 if you wanted to refer to a mystical "exist and not exist" as "it aumed" you would only shift the problem. - Why should existence and nonexistence emerge of what aumed? - Def modate: the structure of all possibilities modates.
Philosophical Explanations Oxford 1981
The Nature of Rationality 1994