projectibility
A property of predicates, measuring the degree to which past instances can be taken to be guides to future ones. The fact that all the cows I have observed have been four-legged may be a reasonable basis from which to predict that future cows will be four-legged. This means that four-leggedness is a projectible predicate. The fact that they have all been living in the late 20th century is not a reasonable basis for predicting that future cows will be. See also entrenchment, Goodman's paradox.

Philosophy dictionary. . 2011.

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