Geometric Series in Social Distancing

Danny Quah
1 min readApr 4, 2020

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.