ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

slides/lesson-08.md

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+---
+theme: seriph
+title: "Lesson 08 — How Can an Agent Know What It Needs to Learn?"
+info: "English video course for AI Agents in Depth"
+author: Bojie Li
+transition: slide-left
+mdc: true
+lineNumbers: false
+monaco: false
+aspectRatio: 16/9
+canvasWidth: 980
+layout: cover
+class: cover
+---
+
+<div class="course-kicker">Build · Chapter 2 · Context Engineering</div>
+
+# How Can an Agent Know What It Needs to Learn?
+
+<p class="course-subtitle">Skills, progressive disclosure, and on-demand capability</p>
+
+<div class="course-cover-meta">Lesson 08 of 42 · 18 minutes · Dynamic Prompts and Agent Skills; Skills and Tools</div>
+
+<!-- Presenter cue: Open with the concrete problem. Add personal context in your own words; do not read the slide. -->
+
+---
+layout: center
+class: text-center
+---
+
+<div class="course-kicker">The central question</div>
+
+<div class="course-big">How can an Agent access hundreds of specialist procedures without carrying all of them in every prompt?</div>
+
+<!-- Presenter cue: Let the question sit for a moment, then state the failure mode the lesson will explain. -->
+
+---
+
+# Why this problem matters
+
+<div class="grid grid-cols-3 gap-5 mt-6">
+<div class="course-card blue">
+<h3>Discovery</h3>
+<p>A thin index tells the Agent what knowledge exists.</p>
+</div>
+<div class="course-card green">
+<h3>Disclosure</h3>
+<p>Detailed instructions load only after a relevant trigger.</p>
+</div>
+<div class="course-card orange">
+<h3>Execution</h3>
+<p>Bundled scripts make repeated procedures deterministic.</p>
+</div>
+</div>
+
+<!-- Presenter cue: Connect each card to a product or experiment consequence. -->
+
+---
+
+# Three ideas to keep in view
+
+<div class="grid grid-cols-3 gap-5 mt-6">
+<div class="course-card purple">
+<h3>Skill metadata</h3>
+<p>Name and description stay visible</p>
+</div>
+<div class="course-card blue">
+<h3>Skill body</h3>
+<p>Workflow loads only when selected</p>
+</div>
+<div class="course-card green">
+<h3>Resources</h3>
+<p>References and scripts load only when required</p>
+</div>
+</div>
+
+<!-- Presenter cue: Define unfamiliar terms in plain language; the audience is new to ML training and RL. -->
+
+---
+
+# The book's visual model
+
+<img class="course-figure" src="/images/fig2-11.svg" alt="Skills progressive disclosure">
+
+<div class="course-caption">Skills progressive disclosure</div>
+
+<!-- Presenter cue: Trace the diagram in one direction and name the mechanism that matters for this lesson. -->
+
+---
+
+# Everything preloaded vs. Progressive disclosure
+
+<div class="grid grid-cols-2 gap-6 mt-5">
+<div class="course-card orange"><h3>Everything preloaded</h3><ul><li>Large static prompt</li><li>High information competition</li><li>Every task pays the cost</li></ul></div>
+<div class="course-card green"><h3>Progressive disclosure</h3><ul><li>Thin capability index</li><li>On-demand instructions</li><li>Task-specific context</li></ul></div>
+</div>
+
+<div class="course-caption course-caption-strong">Skills trade metacognition risk for context efficiency.</div>
+
+<!-- Presenter cue: Explain the trade-off; avoid presenting the right column as universally superior. -->
+
+---
+
+# A Skill is a navigable package
+
+~~~text
+pptx/
+├── SKILL.md          # when and how
+├── reference.md      # details on demand
+├── scripts/
+│   └── render.py
+└── templates/
+~~~
+
+<!-- Presenter cue: Walk through the executable idea line by line; keep implementation details for the terminal. -->
+
+---
+
+# Test the claim
+
+<div class="grid grid-cols-1 gap-4 mt-5">
+<div class="course-card blue">
+<div class="course-demo-head"><span>2-6</span><span>3 min</span></div>
+<h3>Generate a deck through progressive Skill loading</h3>
+<p><strong>Observe:</strong> Metadata → Skill body → referenced script → verified artifact</p>
+</div>
+</div>
+
+<div class="course-caption course-caption-strong">Demo budget: 3 minutes · one contiguous terminal block</div>
+
+<!-- Presenter cue: State the prediction before running anything. Name the observation that could disconfirm it. -->
+
+---
+class: course-terminal
+---
+
+<div class="course-kicker">Live demo</div>
+
+# Switching to the terminal
+
+~~~bash
+$ uv run python chapter2/agent-skills-ppt/demo.py --offline
+~~~
+
+<div class="course-terminal-watch">Run the command(s), narrate decisions, and point to the observation—not just the output.</div>
+
+<!-- Presenter cue: Switch windows now. Return to the next slide after every listed experiment is complete. -->
+
+---
+
+# What the evidence supports
+
+<div class="grid grid-cols-3 gap-5 mt-6">
+<div class="course-card green">
+<h3>Finding 1</h3>
+<p>The Agent initially sees a capability index rather than full instructions.</p>
+</div>
+<div class="course-card blue">
+<h3>Finding 2</h3>
+<p>File reads turn specialist knowledge into explicit trajectory events.</p>
+</div>
+<div class="course-card purple">
+<h3>Finding 3</h3>
+<p>Scripts reduce token use and make artifact creation testable.</p>
+</div>
+</div>
+
+<!-- Presenter cue: Tie each finding to something viewers just observed; distinguish evidence from interpretation. -->
+
+---
+layout: center
+---
+
+<div class="course-kicker course-kicker-red">Where the claim stops</div>
+
+# Boundary condition
+
+<div class="course-boundary">Progressive disclosure fails when the model does not recognize that a Skill is relevant.</div>
+
+<!-- Presenter cue: Say explicitly what this experiment does not establish. -->
+
+---
+layout: center
+---
+
+<div class="course-kicker">Engineering takeaway</div>
+
+# Design rule
+
+<div class="course-rule">Keep capability descriptions broad enough for discovery and Skill bodies narrow enough for reliable execution.</div>
+
+<!-- Presenter cue: Present this as a reusable decision rule, then give one counterexample or trade-off. -->
+
+---
+
+# Continue the experiment
+
+<div class="grid grid-cols-2 gap-4 mt-6">
+<a class="course-link" href="../chapter2/agent-skills-ppt/run_official_experiment.py">
+<span class="course-link-title">Official Skill runtime paths</span>
+<span class="course-link-path">chapter2/agent-skills-ppt/run_official_experiment.py</span>
+</a>
+<a class="course-link" href="../book-en/images/fig2-12.svg">
+<span class="course-link-title">Skill-enabled trajectory</span>
+<span class="course-link-path">book-en/images/fig2-12.svg</span>
+</a>
+<a class="course-link" href="../book-en/chapter2.md">
+<span class="course-link-title">Skills versus tools</span>
+<span class="course-link-path">book-en/chapter2.md</span>
+</a>
+</div>
+
+<!-- Presenter cue: Point viewers to the companion paths; do not walk through every extension. -->
+
+---
+layout: center
+class: text-center
+---
+
+<div class="course-kicker">Pause and apply</div>
+
+# Your turn
+
+<div class="course-big course-reflection">How would you measure false-negative Skill discovery?</div>
+
+<!-- Presenter cue: Invite viewers to pause the video. Offer your own answer after a short beat. -->
+
+---
+layout: center
+class: text-center
+---
+
+<div class="course-kicker">Next · Lesson 09</div>
+
+<div class="course-next">Long tasks need explicit state and selective forgetting, not only selective loading.</div>
+
+<div class="course-next-arrow">→</div>
+
+<!-- Presenter cue: Use this transition to make the course feel continuous rather than episodic. -->