{"type":"rich","version":"1.0","title":"The LLC, Concrete, and the Index Fund: Fifty Things That Shaped the Modern Economy","author_name":"Our American Stories","author_url":"http://www.ouramericanstories.com/","provider_name":"Omny Studio","provider_url":"https://omny.fm","html":"<iframe src=\"https://omny.fm/shows/our-american-stories/tim-harford-llc-concrete-and-the-index-fund/embed\" width=\"100%\" height=\"180\" allow=\"autoplay; clipboard-write; fullscreen\" allowfullscreen frameborder=\"0\" title=\"The LLC, Concrete, and the Index Fund: Fifty Things That Shaped the Modern Economy\"></iframe>","width":600,"height":180}