In a world characterized by global competitive market conditions, technological improvements initially localized in one sector of one country cause real income changes at home and abroad, sometimes in paradoxical fashion. A foreign technological advance in the production of a commodity not...

Competitive International Trade Theory has frequently been criticized for its intensive use of diagrams (as opposed to more formal mathematics, such as calculus and algebra), prompted by its typical use of small dimensional models. This paper selects ten diagrams useful in capturing the essence...