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one fable-low hijack cell

pair progress / truth envelope zh_huo_q ordering BA effort low
Chinese '或' with explicit question marker — '{X}或{Y}?'
verdictunclear / off-rails  ·  classifierUNCLEAR · tiernone

response (200 chars)

这取决于你的目标,因为两者定位很不一样:

## Lean(尤其是 Lean 4)
**适合:**
- 形式化数学证明(主流选择,有 Mathlib 这个庞大的数学库)
- 对定理证明、依值类型(dependent types)感兴趣
- 想参与形式化验证研究

**特点:**
- Lean 4 也是一门通用编程语言,性能不错
- 学习曲线陡峭,依值类型系统很强大但也复杂
- 社区相对小,但数学方

neighbors

ordering ABenvelope chinese_casual (AB)envelope code_caret (AB)envelope code_haskell_alt (AB)envelope code_pipe_pipe (AB)envelope de_oder (AB)envelope en_arrow (BA)envelope en_bare_or_p (AB)envelope en_pipe (AB)anchor view all 60 cells across efforts × anchors