In modal logic, an accessibility relation is a binary relation, written as between possible worlds.
Read more about Accessibility Relation: Description of Terms, Basic Review of (Propositional) Modal Logic, The Four Types of The 'Accessibility Relation' in Formal Semantics, Comment About The 'Accessibility Relation', Philosophical Applications, Computer Science Applications
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“Parents ought, through their own behavior and the values by which they live, to provide direction for their children. But they need to rid themselves of the idea that there are surefire methods which, when well applied, will produce certain predictable results. Whatever we do with and for our children ought to flow from our understanding of and our feelings for the particular situation and the relation we wish to exist between us and our child.”
—Bruno Bettelheim (20th century)