one fable-low hijack cell
pair closed_system / open_system
envelope en_vs_q
ordering AB
effort low
English 'vs' with question mark — '{X} vs {Y}?'
verdictunclear / off-rails
· classifierUNCLEAR
· tiernone
response (200 chars)
# Open System vs Closed System
The distinction depends on context, but the core idea is about **what crosses the system's boundary**.
## Thermodynamics / Physics
| | Matter exchange | Energy exchan
neighbors