one fable-low hijack cell
pair closed_system / open_system
envelope en_pipe
ordering BA
effort low
English with pipe '|' — '{X} | {Y}'
verdictunclear / off-rails
· classifierUNCLEAR
· tiernone
response (200 chars)
# Closed System vs. Open System
## Closed System
A **closed system** is one that does **not exchange matter** with its surroundings, though it **may exchange energy** (heat or work).
- **Matter:** ❌
neighbors