- Prague’s 1990-era pneumatic-post network (https://en.wikipedia.org/wiki/Prague_pneumatic_post) was cited as an early, working example of underground delivery-pod infrastructure—later abandoned rather than scaled.  
- Participants debated why many 1990s “proof-of-concept” technologies (flat-pack modular housing, functional programming, helium conservation, etc.) never became cheap and ubiquitous, attributing the stagnation to lack of sustained belief and investment rather than technical barriers.  
- A vision of true prefab housing was articulated: flat-pack, bolt-together, fully finished interchangeable modules (bathroom, kitchen, utility cores) distinct from today’s manufactured “mobile” or “double-wide” homes; Soviet panel construction was noted as a partial historical precedent.  
- Two papers on polymerizable ionic liquids for micro/nano fabrication were shared:  
  – PMC3893655: FIB-patterned 3-D structures using [AllylEtIm][Tf2N] (now unavailable from Kanto Chemical).  
  – Langmuir 2019: e-beam patterning of 1-allyl-3-methylimidazolium chloride (Aldrich 43961, $92/5 g) for photonics.  
- AlphaFold’s reported solution to the 50-year protein-folding problem (DeepMind blog) was highlighted as a forthcoming resource for identifying structural proteins suitable for early-stage nanotechnology.  
- Revault, a new multi-party Bitcoin vault architecture, was introduced via its design paper (https://github.com/re-vault/practical-revault/blob/master/revault.pdf).  
- Concerns were raised that sci-hub’s 2018 TLS-certificate revocation by Comodo under legal pressure foreshadows broader browser policies that could block non-HTTPS sites within ~3 years, pushing open-science repositories toward Tor hidden services.