Author explained the problem of double coincidence of wants in the barter trade. He wrote that even if the wants coincide, there may be disagreement on the counter values in exchange. Without divisibility of the good, the barter economy runs into barriers to trade. He also wrote on prudence in economic management. He emphasized the need for proactive procurement and infrastructure investments to ensure smooth supply chain, production process and market stability. He favoured procurement from the original nearby source to avoid intermediation mark-up and make purchases when the market has adequate supply and availability so as to avoid cost-push inflation.