I am not a huge fan of this (or the WaPo) simulator, since I they seem to have chosen their models for the nice look (regular grid, bouncing balls) instead of f

I am not a huge fan of this (or the WaPo) simulator, since I they seem to have chosen their models for the nice look (regular grid, bouncing balls) instead of for their accuracy. While you can give people a rough idea of how different containment efforts will work, the models are so far removed from reality that I don't think that it really helps very much. Especially the WaPos'comparison' between different containment measures is IMHO borderline negligent without putting huge caveats in front of them.