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14 - Network Illusions: How Structure Misleads Us

from Part IV - Society

Published online by Cambridge University Press:  08 November 2024

Thomas T. Hills
Affiliation:
University of Warwick
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Summary

The Brexit referendum and the US presidential election of Donald Trump were a surprise to many, on both sides of the fence. In this information age, it is useful to ask how so many people could be so wrong about issues of so much importance. If we all knew what everyone else was thinking there could be no surprise. We are, in fact, wrong about many things when it comes to estimating the beliefs of the majority. Many of our errors arise not because our brains are tricking us, but because our appreciation of structure is underdeveloped. For example, for the majority of people, the places they vacation to are not average destinations, just as the traffic they experience is not average traffic nor the classes they sit through of average attendance. This is because, by definition, the most crowded places are attended by the most people. Similar illusions lead us to overestimate how many friends the average person has, confuse us into making backwards inferences about class and gender divisions, and allow politicians to misrepresent their populations. All of these are guaranteed outcomes of certain kinds of structure which an understanding of networks demystifies.

Type
Chapter
Information
Behavioral Network Science
Language, Mind, and Society
, pp. 227 - 243
Publisher: Cambridge University Press
Print publication year: 2024

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