The secret history of glyphs like the octothorpe; Wizards in red; whether Groupon really works; Rand Paul in action; and yet another political quiz.

Would urban retail perform better with more inviting windows? Plus: Rand Paul and prudence; whether and how to reduce federal workers’ transit subsidies; spending “cuts”; and a video on Arizona’s immigration law.

Rand Paul tries his hand at a new conservative fusionism in Kentucky; a new budget simulator; making transit pretty and whether to subsidize it; and why conservatives should engage in urban policy debates.

Kentucky Senate candidate Rand Paul eloquently defends capitalism and free enterprise in his Republican primary victory speech: