QC

Fun convo with @csvoss: categorizing foods + organisms based on how much they've been optimized by natural selection to be edible. Easiest examples: milk, (botanical) fruits, honey all optimized to be eaten by something. Seeds and eggs optimized to become an organism.

Examples I hadn't thought about: root vegetables (carrots, potatoes, etc.) are storage organs, optimized for storing carbs (kinda like livers). Underground to make them harder to eat.

Speculative: among animals, predators might actually be more edible than prey, overall. Prey have more incentives to be less edible (leads to shells, poison, etc), and predators don't have to worry as much about this.