Geometric Series in Social Distancing

Danny Quah
1 min readApr 4, 2020

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Enough people have seen this Robert Signer graphic on Social Distancing to understand why it matters. But while knowledge of it is, therefore, known, still in explaining the picture, I needed one convenient place I could point people to for the critical part of the Signer calculation.

(Otherwise, you know, watch out for Fake News…)

Finally, I decided to Markdown and R-code the calculation myself, and so I’m just putting it all here for your convenience:

Originally published at http://www.dannyquah.com on April 4, 2020.

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Danny Quah

Danny Quah is Dean and Li Ka Shing Professor in Economics at the Lee Kuan Yew School of Public Policy, NUS.