- **Bernoulli-effect torus discussion**: Participants debated whether a toroidal air-flow device could create localized high-pressure regions without a conventional pressure vessel, speculating on applications such as low-cost kinetic-energy storage or novel cooling effects; muurkha suggested coding a 2-D Navier-Stokes simulation and pointed to a Coding Train tutorial (https://www.youtube.com/watch?v=alhpH6ECFvQ) as a starting point.

- **Oregon Cryonics update**: Jordan Sparks has completed a new facility and hired a biologist to handle lab work; the organization is leaning toward offering aldehyde-stabilized cryopreservation, prompting debate over whether aldehyde cross-linking materially reduces the probability of biological revival versus purely cryogenic methods (forum thread: http://forum.oregoncryo.com/viewtopic.php?p=415#p415).

- **Quality-control in cryonics services**: fenn argued that ~90 % of Alcor’s cases deviate from their own protocols and proposed the creation of an independent “cryonics underwriters association” to provide transparent, third-party audits and drive process improvements, lamenting the absence of market feedback mechanisms.

- **Avrocar & VTOL revisit**: maaku revived the 1950s Avro Canada VZ-9 Avrocar concept (https://en.wikipedia.org/wiki/Avro_Canada_VZ-9_Avrocar) as a modern, computer-stabilized VTOL platform, noting its historical instability but potential viability with current control systems.

- **Low-cost circular tunnelling concept**: docl outlined an experimental method for digging narrow, deep circular tunnels using a continuously moving string coated with a dirt-binder ceramic (2.5–5 % methocel-type binder) to cut and line the bore, claiming the approach could be fully automated with minimal mechanical complexity compared to conventional excavators.