" Stock and flow” is an economic concept that writer Robin Sloan has adapted into a metaphor for media: “Flow is the feed. It’s the posts and the tweets. It’s the stream of daily and sub-daily updates that remind people you exist. Stock is the durable stuff. It’s the content you produce that’s as interesting in two months (or two years) as it is today. "

― Austin Kleon , Show Your Work!: 10 Ways to Share Your Creativity and Get Discovered