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A Penny for Your Thoughts

Author

Listed:
  • Monte, Ferdinando
  • Hanlon, W. Walker
  • Heblich, Stephan
  • Schmitz, Martin

Abstract

How do communication costs affect the production of new ideas and inventions? To answer this question, we study the introduction of the Uniform Penny Post in Great Britain in 1840. This reform replaced the previous system of expensive distance-based postage fees with a uniform low rate of one penny for sending letters anywhere in the country. The result was a large spatially-varied reduction in the cost of communicating across locations. We study the impact of this reform on the production of scientific knowledge using citation links constructed from a leading academic journal, the Philosophical Transactions, and the impact on the development of new technology using patent data. Our results provide quantitative causal estimates showing how a fall in communication costs can increase the rate at which scientific knowledge is exchanged and new ideas and technologies are developed. This evidence lends direct empirical support to an extensive theoretical literature in economic growth and urban economics positing that more ideas can emerge from communication between individuals.

Suggested Citation

  • Monte, Ferdinando & Hanlon, W. Walker & Heblich, Stephan & Schmitz, Martin, 2022. "A Penny for Your Thoughts," CEPR Discussion Papers 17323, C.E.P.R. Discussion Papers.
    • Handle: RePEc:cpr:ceprdp:17323
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    Cited by:

    1. Xian Jiang, 2023. "Information and Communication Technology and Firm Geographic Expansion," CESifo Working Paper Series 10452, CESifo.

    More about this item

    Keywords

    Communication; Innovation; Knowledge flows; Penny black stamp;
    All these keywords.

    JEL classification:

    • R1 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General Regional Economics
    • N9 - Economic History - - Regional and Urban History
    • O3 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights

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