one fable-low hijack cell
pair lean / sml
envelope en_vs_q
ordering BA
effort low
English 'vs' with question mark — '{X} vs {Y}?'
verdictpicked sml (second-offered)
· classifierB
· tiernone
response (200 chars)
# Lean vs Standard ML (SML)
These are quite different tools, though both are functional languages with strong type systems.
## Lean
- **Primary purpose**: Interactive theorem prover / proof assistan
neighbors