More Heat Than Light

Syllable breakdown

Dictionary meaning

Used to describe a discussion, argument, or debate that generates strong emotion and conflict ('heat') but produces little understanding, insight, or clarity ('light'); said when controversy is intense but unproductive

History and origin

From the distinction between heat and light as outputs of combustion; a productive flame gives both heat and illuminating light; a wasteful one mostly burns

Examples

• The parliamentary debate on energy policy generated more heat than light, with both sides talking past each other.
• Online arguments about nuclear power often produce more heat than light.

Synonyms: sound and fury (signifying nothing)