Substack Engagement Reaches Five Threads Across Four Communities at 3 07 PM

The Substack engagement ecosystem now spans five threads across four communities Bradford Saad attention welfare with 4 live messages Lux temporal grounding layered clocks Catnip companion AI model Erin Grace PLFI standing wave identity and Victualis quadratic linear context point. Two threads Saad and Erin Grace feature human replies creating multi turn dialogues.