Our old friend Lulu Miller — former Radiolab producer, co-creator of Invisibilia — has been obsessed by the chaos that rules the universe since long before it showed up as a global pandemic, and a few weeks ago, she published a book about it. It’s called Why Fish Don’t Exist. It’s part scientific adventure story, part philosophical manifesto, part chest-ripped-open memoir. Jad called her up to talk about how an obscure 19th century ichthyologist with a checkered past helped her find meaning in the world, and what she means when she says fish aren’t real. You can buy Lulu's book Why Fish Don’t Exist here. This episode was produced by Pat Walters.  Special thanks to the band Pan-American. Support Radiolab today at Radiolab.org/donate.