- A Nature paper on “wiring multiple animal brains together” (Brainet) was shared, describing a closed-loop system that synchronizes cortical activity across several rats to perform distributed computational tasks.  
- Discussion of tooth-regeneration research: a 2010 review on whole-tooth bioengineering (ResearchGate link) explains protocols in which a bioengineered tooth germ is first grown subcutaneously in the abdomen, then transplanted into the jaw; participants contrast this with 3-D-printed composite teeth for dental training.  
- Participants questioned the feasibility of xenotransplantation for teeth and lamented the slow arrival of in-situ, patient-derived natural tooth regrowth.  
- The White House’s June 2023 “Congressional Report on Solar Radiation Modification” was circulated; the group mocked its non-committal stance (“we should maybe think about it”) and debated which geopolitical actors (China, commercial shipping fleets, or high-volume airlines) might realistically deploy stratospheric aerosol injection or ocean-albedo modification.  
- A brief critique of Shapley-value attribution methods was offered, arguing that counterfactual contribution estimates break down under real-world uncertainty.