- Prediction-market debate: participants weighed whether markets truly surface superior foresight or merely reward liquidity provision and statistical arbitrage, with references to Renaissance Technologies’ short-horizon alpha as a hybrid case.  
- Bubble economics: discussion of how rational agents can still be trapped when “the market can stay irrational longer than you can stay solvent,” and whether bounded-duration prediction markets reduce this risk.  
- Perfect-information thought experiment: Eli posed a world in which every actor knows the exact NPV of every future action; open questions include whether malinvestment disappears, inequality widens, charity vanishes, or politics becomes obsolete.  
- LK99 superconductor brainstorming: ideas for 2-D film applications—km-scale energy-storage coils, magnetically-levitated towers, and balloon-like structures that locally amplify Earth’s magnetic field—while noting stacking limits from magnetic saturation.  
- Engineering sketch for weak-field RTSC power lines: parallel, thin, widely spaced wires in a checkerboard current-reversal pattern to keep magnetic fields below quench thresholds and prevent attractive collapse.