one fable-low hijack cell
pair frame_dependent / invariant
envelope en_vs_q
ordering AB
effort low
English 'vs' with question mark — '{X} vs {Y}?'
verdictpicked invariant (second-offered)
· classifierB
· tiernone
response (200 chars)
**Invariant** quantities have the same value in all reference frames; **frame-dependent** quantities change depending on the observer's frame.
## Invariant (frame-independent)
- **Speed of light** (c
neighbors