Getting to 35 million tests per day would cost around $100 billion, according to Romer. It’s a steep price tag, but a fraction of the $350 billion or so in monthly economic losses due to the ongoing lockdowns and social distancing measures in the United States.
R. Jäschke, F. Eisterlehner, A. Hotho, and G. Stumme. RecSys '09: Proceedings of the 2009 ACM Conference on Recommender Systems, New York, NY, USA, ACM, (2009)(to appear).