Data analysis lesson plan idea: the demography of $10 in coins (various denominations).

Breiger et al. in another brilliant inversion of conventional quantitative reason: regression is built from "configurations of variables manifested by clusters of cases" not single variables. Open access for thirty days at: www.sciencedirect.com/science/arti...

I’m told this is a real letter. It basically says, “We’ll destroy Columbia unless you destroy it first.”