- **Emulation “sleep tax” debate**: Participants argue that if whole-brain emulation must faithfully reproduce sleep states, the extra CPU-hours spent emulating unconscious periods become a major cost driver; no consensus on whether sleep phases can be analytically compressed or skipped without fidelity loss.  
- **Variable-speed emulation proposal**: archels suggests running emulated minds at higher clock rates during sleep, then throttling back for shared real-time interaction; kanzure counters that available compute is finite and such throttling would already have been exploited if technically feasible.  
- **Class-divide concern**: Discussion foresees a stratified society where only the wealthy can afford fast hardware, leading to objective-time disparities (“Dave’s old hardware is making this meeting take forever”).  
- **Robin Hanson’s “Age of Em”**: JayDugger shares a 2-hour talk (https://www.youtube.com/watch?v=XP-p-O200jo, skip to ~48 min) outlining Hanson’s forecast of an emulation economy with rigid caste-like structures; cluckj notes the tension between prediction and perceived endorsement.  
- **Brain-upload file-size skepticism**: archels questions claims that “we have decent estimates” for the data required to encode a mind; kanzure offers total galactic energy as a hard upper bound but concedes we still lack the necessary level-of-description detail.  
- **Asteroid-mining realism**: kanzure links Deep Space Industries and Planetary Resources; maaku asserts the industry is “plausible” and mentions having worked on a potential “disrupter” (later clarified not to be a literal bomb).  
- **Jojoba oil as historical lubricant**: fenn and nmz787_i note that jojoba oil was a WWII-era substitute for whale oil in high-performance bearings, illustrating low-tech bio-material precedents.  
- **Python error-ID semantics**: nmz787_i asks for a semver-like scheme for uniquely tagging warnings/errors; kanzure recommends custom exception subclasses and centralized documentation.