Three’s a Crowd?

Were there 5 million people at the Cubs rally downtown last week? Everyone agrees that there were a lot of people there, but just how do they decide on a number? One estimation method was developed by journalism professor Herbert Jacobs in the 1960s. The method is described by msnbc in an article that discusses estimating crowds and some recent historical gatherings. And in 2011, Popular Mechanics magazine talked about some of the science behind crowd estimation.

 

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