What We Are Reading Today: Playbooks and Checkbooks by Stefan Szymanski

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Updated 28 May 2020
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What We Are Reading Today: Playbooks and Checkbooks by Stefan Szymanski

What economic rules govern sports? How does the sports business differ from other businesses? Playbooks and Checkbooks takes a fascinating step-by-step look at the fundamental economic relationships shaping modern sports. 

Focusing on the ways that the sports business does and does not overlap with economics, the book uncovers the core paradox at the heart of the sports industry. Unlike other businesses, the sports industry would not survive if competitors obliterated each other to extinction, financially or otherwise — without rivals there is nothing to sell. Playbooks and Checkbooks examines how this unique economic truth plays out in the sports world, both on and off the field.

Noted economist Stefan Szymanski explains how modern sporting contests have evolved; how sports competitions are organized; and how economics has guided antitrust, monopoly, and cartel issues in the sporting world. Szymanski considers the motivation provided by prize money, uncovers discrepancies in players’ salaries.


What We Are Reading Today: ‘An Introduction to General Relativity and Cosmology’ by Steven A. Balbus

Updated 28 January 2026
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What We Are Reading Today: ‘An Introduction to General Relativity and Cosmology’ by Steven A. Balbus

General relativity has entered a new phase of its development as technical advances have led to the direct detection of gravitational radiation from the merging of single pairs of stellar-sized black holes.

The exquisite sensitivity of pulsar signal timing measurements has also been exploited to reveal the presence of a background of gravitational waves, most likely arising from the mergers of supermassive black holes thought to be present at the center of most galaxies.

This book demonstrates how general relativity is central to understanding these and other observations.