1. On critical thresholds and cultural/scientific diffusion: https://www.meltingasphalt.com/interactive/going-critical/
2. A second reference on critical thresholds (sorry for the self-reference but I’m rushing): https://science.sciencemag.org/content/360/6393/1116
3. Look up the definition of “phase transition”
[possible cool topic for future meeting—things that hover near criticality..]
