恒こう常じょう所しょ得とく仮か説せつこうじょうしょとくかせつMeanings1nounpermanent income hypothesiseconomics›An economics concept proposed by Milton Friedman, stating that consumption is determined by expected long-term average income rather than current income.恒こう常じょう所しょ得とく仮か説せつによれ