https://ziheng-hk.vercel.app/ 三個產品,一種做法:AI 給答案,系統留證據。與其信,不如驗。Three products, one way: AI gives the answer, the system keeps the evidence. zh-Hant https://ziheng-hk.vercel.app/insights/verify https://ziheng-hk.vercel.app/insights/verify Fri, 24 Oct 2026 12:00:00 +0800 封存預測、簽名淨值、可回放歷史、第三方對照、認衰邊界——任何 AI 選股工具答唔出呢五條,答案已經喺度。Five questions to verify any AI stock picker's track record. https://ziheng-hk.vercel.app/insights/sfc-ai https://ziheng-hk.vercel.app/insights/sfc-ai Fri, 24 Oct 2026 12:00:00 +0800 SFC 對 AI 語言模型嘅四條線:問責、人類監督、能力、通知——同一套「可問責」設計點樣落地。The SFC's four AI expectations mapped to a no-source-no-answer architecture.