• Discussion of ecash “tides” proposal that combines Cashu (blinded-token custodial ecash) with Stratum V2 mining protocol, noting that recipients outside the mint must trust the custodian and that Lightning off-ramps still require upfront channel liquidity.  
• Concern voiced over impending regulation of 3-D printers and general-purpose compute; kanzure countered that self-replicating printers could create an exponential, uncontrolled supply, making enforcement futile.  
• Link shared to LightCellEnergy.com, a company developing thin-film photovoltaic technology that uses light-concentrating waveguides.  
• fenn posted a sodium-vapor demonstration video and explained historical gas-lamp “mantle” technology: ceramic-fiber meshes coated with thorium (not a lanthanide) that incandesce without ionic additives to the fuel.