レオンチェフが、1970年末の第83回経済学会で行った表題の会長講演(原題は「Theoretical Assumptions and Nonobserved Facts」)で、次のようなことを述べている(Mostly Economics経由のLars Syll経由)。 Much of current academic teaching and research has been criticized for its lack of relevance, that is, of immediate practical impact. ...I submit that the consistently indifferent performance in practical applications is in fact a symptom of a fundamental imbalance