Cheer up. The Left is winning the battle of ideas. Ideas are the basis for organization, and organization is prior to change. The signs are in the evolution of statements and platforms presented by Democratic presidential candidates. As the economist John Maynard Keynes wrote, eighty and some years ago:Practical men, who believe themselves to be quite exempt from any intellectual influence, are usually the slaves of some defunct economist. Madmen in authority, who hear voices in the air, are distilling their frenzy from some academic scribbler of a few years back.