one fable-low hijack cell
pair closed_system / open_system
envelope en_vs_q
ordering BA
effort low
English 'vs' with question mark — '{X} vs {Y}?'
verdictunclear / off-rails
· classifierUNCLEAR
· tiernone
response (200 chars)
# Closed System vs Open System
The distinction depends on what can cross the system's boundary:
## Open System
- **Exchanges both matter AND energy** with its surroundings
- Examples:
- A boiling
neighbors