On this lovely ep, we have a chat with journalist and podcaster Shaun Raviv (@ShaunRaviv) about the history of vaccines, Slate Star Codex, living abroad, sci-fi books, our favorite Simpsons lines, and much more! Listen to Shaun's podcast Long Shot wherever you get your podcasts. Follow us on Twitter at @leightonnight and on Instagram at @leighton_night. You can find Brian on Twitter/Instagram at @bwecht, and Leighton at @graylish (Twitter)/@buttchamps (Instagram).