- Kleptoplasty in mammals was posed as an open question, asking whether the algal “solar-powered” chloroplast uptake seen in some sea slugs could ever be engineered into mammals.  
- Radicle (radicle.xyz), a p2p code-collaboration stack, was dissected: participants debated whether its issues/code-review data should live in the same git branch as the source, the practicality of browser-based WebRTC peers, and the limits of NAT traversal and local storage in web clients.  
- A deep dive on low-cost RF exploration followed: TinySA ($80 handheld spectrum analyzer) was compared to RTL-SDR and HackRF; achievable scan rates (~2 Hz for TinySA, 200 Hz for HackRF over narrow spans) were calculated, and trade-offs between resolution bandwidth, instantaneous bandwidth, and update rate were clarified.  
- “Radio-vision” concept: mapping the full 0–6 GHz spectrum to audible frequencies in real time while walking around with directional antennas (bunny ears, vivaldi hats, or body-worn spirals) to “hear” Wi-Fi, cellular, and other emitters; phase-comparison direction-finding was judged impractical at low frequencies, leaving RSSI + directional antennas as the fallback.  
- Memory-suppression biology: FXR1P (Fragile X Related Protein 1) was highlighted as a newly discovered brake on long-term memory formation and synaptic potentiation, raising concerns about potential misuse for selective amnesia.  
- DIY PCB lithography discussion: “Laser Direct Imaging” using a 405 nm Blu-ray laser mounted on a 3-D-printer gantry to expose UV resist on copper-clad boards was proposed as an accessible alternative to transparency masks, with notes on temperature control via heated beds and prior art using scavenged CD-ROM mechanics.