In Judith Viorst’s picture book The Tenth Good Thing About Barney, a family grapples with the death of their cat, Barney. Pleia, a start-up based outside of Medellín, Colombia, founded by Melissa Naranjo Hoyos and Daniel Correa Jaramillo in 2018, has devised a streamlined approach to the 10th good thing about Barney. “If you don’t control this process very well,” …