Under a doctrine established in the 1984 case Chevron v. Natural Resources Defense Council, courts defer to a federal agency's "permissible" or "reasonable" interpretation of an "ambiguous" statute.

Ambiguity is often perceived as a source of confusion and discomfort, but it holds a surprising power to influence our thinking, creativity, and resilience. In a world that increasingly values clarity ...

Ambiguity and its cousins, contradiction and paradox, are everywhere in mathematics, both in content and thinking. Strangely, the subject that appears to be the very paradigm of reason, and that is ...