- A participant reported empirical vacuum-chamber results: PVC tubing limited their rough pump to 8 Torr, while the same pump alone reached 0.01 Torr, illustrating PVC’s outgassing problem even though commercial “vacuum-grade” PVC hose is widely sold.  
- They are considering switching to 12-inch-diameter carbon-steel pipe at $8 per linear foot as a lower-outgassing, structurally stronger alternative for future chambers.  
- Ben Krasnow’s YouTube video (https://www.youtube.com/watch?v=nIKhUizkXxA&t=6m26s) was cited as anecdotal evidence of severe PVC outgassing under high-vacuum conditions.  
- Discussion briefly touched on the hierarchy of vacuum levels: rough pumps (~0.01 Torr) vs. turbo-pumped ultra-high vacuum (~10⁻⁶ Torr) and the need for multi-stage systems.  
- Early speculation was raised about whether COVID-19 shows heightened comorbidity with HIV, though no data or sources were provided.  
- A link dump of 2020 thymus-aging research and organoid papers was shared (http://gnusha.org/logs/temp/thymus.search-results.txt) for those exploring immune-system rejuvenation strategies.  
- NASA’s call for a new astronaut corps was announced, with BBC coverage (https://www.bbc.com/news/world-us-canada-51487871) and a companion documentary (https://www.bbcstudios.com.au/shows/astronauts-do-you-have-what-it-takes/) offered as background.