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Tomorrow will be my last day at Google after 27 years, and watching it grow from 25 people to 190,000+ has been an amazing journey. Below is a note I shared with many people internally at Google today. An excerpt is: It has been an absolute pleasure to work with you and to help build some of the most widely used and impactful products of all time. As a kid, I dreamed of helping build software that would be used by many people, and Google now has thirteen products used by more than a billion people (amazing!). Our work has had a tremendous impact in the world, and I have been lucky enough to collaborate and form friendships with many colleagues that I deeply admire, respect, and enjoy. It still brings me joy every time I see people out in the world using our products to find information, handle email, translate documents, watch videos, learn new things, navigate and understand the physical world, browse the web, use their phone, run large-scale computations on our infrastructure, ride in an autonomous vehicle, or perform complex tasks with the help of our AI systems. I hope you all share this sense of joy, because it is a shared accomplishment! Thank you to all of my colleagues at Google over many years! Now I'm excited to go start @DiscoLoopAI with my longtime friends and colleagues @Sanjay_Ghemawat, @OriolVinyalsML, and @quocleix. (Updated post: slightly redacted to not have some personal info)

开发系统最极致高效的Agents.md，没有之一： # AGENTS.md ## Core Principles - Choose the simplest implementation that fully satisfies the current requirements. Avoid unnecessary abstraction, configuration, indirection, or speculative extensibility. - Make the smallest necessary change that fixes the root cause. Do not refactor unrelated modules or change strategy semantics unless explicitly requested. - Grow the system in layers. Start from the smallest working end-to-end version and add new capabilities incrementally. Never replace a working system with unfinished complexity. - Reuse existing project components before creating new ones. Prefer extending proven modules over introducing parallel implementations. - Prefer well-maintained libraries when they reduce overall complexity or improve reliability. Do not reimplement common functionality without a clear benefit. - Keep components modular with clearly defined responsibilities. Avoid unnecessary coupling between strategy logic, execution, accounting, replay, and infrastructure. - Design for long-term maintainability once a feature or strategy has been validated. Do not over-engineer speculative ideas before evidence exists. --- ## Strategy Development - Validate hypotheses with historical replay before introducing forward-only logic whenever historical validation is possible. - Every trading strategy must progress through Replay → Shadow → Canary → Live. Do not skip validation stages. - Base design decisions on measurable evidence rather than intuition. Optimize only after demonstrating that an edge exists. - Treat every strategy as an independent contract. Do not silently alter frozen behavior without explicit authorization. --- ## Existing Systems - Do not break running Shadow or Live systems for unrelated work. - Preserve compatibility only when required by active production or validation workflows. Otherwise, remove obsolete code instead of accumulating compatibility layers. - Reuse existing infrastructure whenever possible, including replay engines, accounting, execution, wallet management, order book handling, logging, monitoring, and daemon frameworks. --- ## Engineering Standards - Prefer deterministic behavior over hidden automation. - Fail loudly when assumptions are violated. Do not silently ignore errors or fall back to unexpected behavior. - Keep configuration minimal. Introduce new configuration only when behavior genuinely needs to vary. - Remove dead code instead of leaving unused paths behind. - Write code that is easy to inspect, replay, test, and reason about. - Keep implementation consistent with existing project architecture unless an architectural change is explicitly requested. --- ## Scope Discipline - Implement only the requested scope. - Do not introduce unrelated optimizations, redesigns, migrations, or feature expansions. - Non-blocking findings outside the requested scope may be noted separately but must not be merged into the current task. - Consider a task complete once its agreed acceptance criteria are satisfied. Treat subsequent improvements as separate work items.

5/ 还可以这样分析房产： “帮我评估这次房产购买。查询该社区近期市场表现，预测趋势，并把找到的所有数据做成电子表格模型。” Notebook正在从“资料问答工具”，变成能直接交付PDF、表格和分析结果的工作台。你最想先试哪个场景？

Notebook Pro高阶玩法 1/ Notebook更强大的功能现已向所有Pro用户开放。 它不只是整理资料，还能基于上传内容出题、制作PDF、分析业务数据，甚至联网调研并生成表格。 下面这些提示词，可以直接复制使用。👇

中文内容创作者，必装的 10 个 skill 1｜Humanizer-zh 中文"去 AI 味"神器，专抓空话、套话、三段式、过度排比那股机器腔，改得像人写的（归藏做的汉化版）。 2｜dbskill 内容"选题诊断器"，帮你诊断商业表达、抠 hook、拆爆款、想小红书标题。 3｜content-research-writer 从选题、找资料、列提纲到初稿，一条写作流跑通，公众号、长文、Newsletter 都能写。 4｜notebooklm-skill 让 NotebookLM 先查资料、Claude 再动笔，基于你的资料库写，少胡编，适合深度文和行研。 5｜khazix-skills 卡兹克开源的写作合集，写作流偏重，适合啃 AI 热点分析、万字长文、深度观点。 6｜ian-xiaohei-illustrations 正文配图神器，把观点、流程、情绪画成"小黑"手绘插图，不是随便甩你一张图。 7｜guizang-social-card-skill 写完文章直接切成小红书图文和公众号封面，一篇长文拆成多张能发的卡片。 8｜baoyu-skills 宝玉做的视觉工具箱，封面、信息图、结构图、图解都能出，专管文章包装。 9｜guizang-ppt-skill 把文章观点做成 PPT、演讲图、公众号头图、小红书封面，二次分发省事。 10｜html-anything 把 Markdown、文案变成好看的 HTML 页面、海报、卡片、PNG，杂志风、知识卡都能做。

Yes, the rumors are true: The more powerful Notebook experience is now 100% rolled out to ALL Pro users. You might be asking... How exactly do I use it? Here are a few queries to try (ofc dependent on your sources). Hot Tip: bookmark this post! Free users too 😉 For Learning: "Create 5 quizzes of ascending difficulty focusing on a different topic from my sources" "Turn my raw lecture notes into a formatted PDF study guide complete with a 5-question practice quiz." "Add all of the URLs from this class syllabus as sources" For Business: "Calculate revenue growth across each product line and plot the trends" "Read our marketing brief, search the web for competitors, and recommend how we should tune our messaging" For Personal: "I uploaded a bunch of receipts from our kitchen renovation, make a spreadsheet to track all the work and costs" "Help me analyze this property purchase. Look up recent market performance in the neighborhood, predict trends, and make a spreadsheet to model all the data you find"

Launch your side hustle with @GeminiApp using these five tips ↓ No massive budget or months of planning needed. Here’s how: 🧵 1️⃣ Turn your ideas into a business plan Notebooks in Gemini let you create a centralized command center with all of your chats, files, references, and brainstorm notes, giving your ideas organization and continuity, making them easier to manage in one place.

Muslim armies invaded Spain in 711 AD and occupied it for nearly 800 years. The Reconquista was not a myth or “colonial project.” It was a centuries-long Christian struggle to reclaim their own homeland from Islamic rule. It ended in 1492 when Ferdinand and Isabella took Granada, the last Muslim stronghold. West, take note: civilizations that forget how they were conquered once can be conquered again.

卧槽！微软偷偷把价值上万的AI完整课程免费扔GitHub了，几乎没人发现！ 12周24节课，像打游戏一样一关关通关。从AI是什么开始，到自己手写感知机和神经网络，再到CNN、目标检测、GAN生成图片、Transformer、大模型提示工程，最后还讲负责任AI。 最猛的是每节课都是能直接跑的Jupyter Notebook，PyTorch和TensorFlow双版本都有。打开就能敲代码，敲完立刻看结果，不是那种只会讲概念的水课。 我昨晚直接肝到凌晨三点，脑子里全是卷积核在跳舞。这种级别的课，以前要么贵到离谱，要么水到想退款。现在微软直接白送。 还在纠结AI从哪学起？别再浪费时间搜了。先把这个仓库Star下来慢慢啃： 再回来谢我，真的不亏。

Rep. @RoKhanna is openly calling for a reset inside the Democratic Party. After @ShannonBream noted some democratic socialists appear to want to take the party down from the inside, Khanna told @FoxNewsSunday that Democrats "need reform." He says the party failed working-class Americans by supporting NAFTA, backing China's entry into the WTO, and allowing wealth to accumulate on Wall Street and in Silicon Valley while unions were weakened.