Half as many people will not support half as many enterprises In a given geographical territory, half as many people will not support half as many such enterprises spaced at twice the distance. When distance inconvenience sets in, the small, the various and the personal wither away. Jane Jacobs, The Death and Life of Great American Cities densitydistancegeographybusinesseconomics
Walking lessons A Tweet twitter.com Lecturing Birds on How to Fly, from Nassim Nicholas Taleb's Antifragile If children started school at six months old and their teachers gave them walking lessons, within a single generation people would come to believe that humans couldn't learn to walk without going to school. learningschoolchildhood