Expelliarmus! shouts Harry Potter and the dark wizard loses his wand. Heroes of the fantasy world are incomplete without their tools: Thor’s Hammer, Captain America’s Shield, Iron Man’s suit, and let’s not forget the most tool dependent superhero of them all, Batman. You don’t need to save the world from the apocalyptic intentions of villains, but you do need tools to save yourself — from the avalanche of strict deadlines, and...