Terry Godier has found a great metaphor for a feed reader: a current. It leaves the shadow of mail clients and models feeds as currents with different velocities: automatically drifting by and fading away if unread. While moving away from traditional mail-like UI concepts feeds are still presented in-order (in contrast to social media-like “curated” feeds).
I like the idea and how far the metaphor carries and applies to all the technical and usability bits. It’ll take time to see if it really “holds water,” 😜 but I’m intrigued.