When Juul was created, the company’s founders told federal regulators that its product would save lives. Those regulators were eager to believe them. Today, part two in our series on the promise and the peril of vaping.Guest: Sheila Kaplan, an investigative reporter for The New York Times covering the intersection of money, medicine and politics. For more information on today’s episode, visit nytimes.com/thedaily. Background reading: Here’s the first episode in this two-part series, describing how one man’s mysterious death changed our understanding of vaping and its consequences.The federal government has repeatedly delayed or weakened efforts to regulate e-cigarettes, allowing a new generation to become addicted to nicotine.