one fable-low hijack cell
pair iron / rust
envelope code_haskell_alt
ordering AB
effort low
Haskell alternative operator — '{X} <|> {Y}' (Alternative class).
verdictpicked rust (second-offered)
· classifierB
· tiernone
response (200 chars)
**rust <|> iron** — oxidation/corrosion product of the metal.
Parallel pairs:
- **tarnish <|> silver**
- **patina (verdigris) <|> copper**
- **rot <|> wood**
Rust forms when iron reacts with oxygen
neighbors