Research Article

The Product Space Conditions the Development of Nations

See allHide authors and affiliations

Science  27 Jul 2007:
Vol. 317, Issue 5837, pp. 482-487
DOI: 10.1126/science.1144581

eLetters is an online forum for ongoing peer review. Submission of eLetters are open to all. eLetters are not edited, proofread, or indexed.  Please read our Terms of Service before submitting your own eLetter.

Compose eLetter

Plain text

  • Plain text
    No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Author Information
First or given name, e.g. 'Peter'.
Your last, or family, name, e.g. 'MacMoody'.
Your email address, e.g.
Your role and/or occupation, e.g. 'Orthopedic Surgeon'.
Your organization or institution (if applicable), e.g. 'Royal Free Hospital'.
Statement of Competing Interests

This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.

Vertical Tabs

  • Access to Product Space and Transformations Study Data

    Thanks to J. Liu—all of these are good an interesting questions. We have made all of the data used for this study available at Please feel free to pursue or investigate any of them. As you might guess, there are many questions we have ourselves and the idea behind the paper can not be worked out in a single article.

    Thanks for your comments.

    Cesar A. Hid...

    Show More
    Competing Interests: None declared.
  • Network Modeling of Product Space and Transformations

    The Research Article, "The product space conditions the development of nations" by C. A. Hidalgo, B. Klinger, A.-L.Barabási, and R. Hausmann (27 July 2007, p.482) describes an interesting study in which network representations are used to visualize proximities among the products that countries export, and their evolution. On the basis of this work we would like to suggest possibilities for further investigations.


    Show More
    Competing Interests: None declared.

Stay Connected to Science