ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）
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---
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theme: seriph
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title: "Lesson 22 — How Do You Test an Agent Instead of Its Final Answer?"
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info: "English video course for AI Agents in Depth"
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author: Bojie Li
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transition: slide-left
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mdc: true
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lineNumbers: false
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monaco: false
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aspectRatio: 16/9
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canvasWidth: 980
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layout: cover
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class: cover
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---
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<div class="course-kicker">Improve · Chapter 6 · Agent Evaluation</div>
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# How Do You Test an Agent Instead of Its Final Answer?
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<p class="course-subtitle">Environments, state, datasets, and executable verification</p>
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<div class="course-cover-meta">Lesson 22 of 42 · 18 minutes · Automated Evaluation Environment; Evaluation Task Datasets; Simulation Environments</div>
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<!-- Presenter cue: Open with the concrete problem. Add personal context in your own words; do not read the slide. -->
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---
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<div class="course-kicker">Improve · Chapter 6 · Agent Evaluation</div>
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# Problems this chapter will solve
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<div class="grid grid-cols-3 gap-5 mt-6">
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<div class="course-card blue">
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<h3>Lesson 22</h3>
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<p>How Do You Test an Agent Instead of Its Final Answer?</p>
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</div>
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<div class="course-card green">
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<h3>Lesson 23</h3>
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<p>How Do You Judge Quality Without Hiding Failure?</p>
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</div>
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<div class="course-card purple">
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<h3>Lesson 24</h3>
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<p>Which Agent Should You Ship?</p>
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</div>
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<div class="course-card blue">
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<h3>Lesson 25</h3>
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<p>Did the Agent Improve—or Did the Numbers Move?</p>
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</div>
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</div>
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<!-- Presenter cue: Orient viewers to the chapter. Name the progression, then highlight today's first problem. -->
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---
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# Why this problem matters
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<div class="grid grid-cols-3 gap-5 mt-6">
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<div class="course-card blue">
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<h3>Initial state</h3>
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<p>Every run begins from the same controllable world.</p>
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</div>
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<div class="course-card green">
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<h3>Interaction</h3>
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<p>The Agent receives realistic tools, errors, and user disclosures.</p>
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</div>
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<div class="course-card orange">
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<h3>Verification</h3>
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<p>Success is read from external state—not self-reported.</p>
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</div>
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</div>
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<!-- Presenter cue: Connect each card to a product or experiment consequence. -->
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---
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# Three ideas to keep in view
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<div class="grid grid-cols-3 gap-5 mt-6">
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<div class="course-card purple">
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<h3>Dataset</h3>
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<p>Initial state + goal + boundary cases + success criteria</p>
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</div>
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<div class="course-card blue">
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<h3>Environment</h3>
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<p>State transitions, reset, tools, and termination</p>
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</div>
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<div class="course-card green">
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<h3>Protocol</h3>
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<p>Tool-only tasks or progressive user simulation</p>
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</div>
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</div>
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<!-- Presenter cue: Define unfamiliar terms in plain language; the audience is new to ML training and RL. -->
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---
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# The book's visual model
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<img class="course-figure" src="/images/fig6-2.svg" alt="Tool-calling and human-computer interaction evaluation environments">
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<div class="course-caption">Tool-calling and human-computer interaction evaluation environments</div>
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<!-- Presenter cue: Trace the diagram in one direction and name the mechanism that matters for this lesson. -->
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---
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# Answer benchmark vs. Agent evaluation
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<div class="grid grid-cols-2 gap-6 mt-5">
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<div class="course-card orange"><h3>Answer benchmark</h3><ul><li>One prompt</li><li>One response</li><li>String or judge score</li></ul></div>
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<div class="course-card green"><h3>Agent evaluation</h3><ul><li>Mutable state</li><li>Multi-turn trajectory</li><li>Executable outcome checks</li></ul></div>
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</div>
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<div class="course-caption course-caption-strong">An Agent can say the right thing while changing the world incorrectly.</div>
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<!-- Presenter cue: Explain the trade-off; avoid presenting the right column as universally superior. -->
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---
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# Reset, act, and inspect
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~~~python
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state = environment.reset(case.seed)
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trajectory = agent.run(case.goal, environment.tools)
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outcome = environment.snapshot()
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passed = verifier.check(outcome, trajectory)
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store(case, trajectory, outcome, passed)
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~~~
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<!-- Presenter cue: Walk through the executable idea line by line; keep implementation details for the terminal. -->
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---
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# Test the claim
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<div class="grid grid-cols-1 gap-4 mt-5">
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<div class="course-card blue">
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<div class="course-demo-head"><span>Evaluation control</span><span>2 min</span></div>
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<h3>Score a reporting Agent from external state</h3>
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<p><strong>Observe:</strong> Tool-call correctness, arithmetic, evidence citations, and unsupported-claim vetoes</p>
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</div>
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</div>
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<div class="course-caption course-caption-strong">Demo budget: 2 minutes · one contiguous terminal block</div>
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<!-- Presenter cue: State the prediction before running anything. Name the observation that could disconfirm it. -->
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---
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class: course-terminal
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---
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<div class="course-kicker">Live demo</div>
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# Switching to the terminal
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~~~bash
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$ cd chapter6/public-health-reporting-eval && python demo.py
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~~~
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<div class="course-terminal-watch">Run the command(s), narrate decisions, and point to the observation—not just the output.</div>
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<!-- Presenter cue: Switch windows now. Return to the next slide after every listed experiment is complete. -->
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---
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# What the evidence supports
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<div class="grid grid-cols-3 gap-5 mt-6">
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<div class="course-card green">
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<h3>Finding 1</h3>
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<p>A resettable environment turns a trajectory into a repeatable experiment.</p>
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</div>
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<div class="course-card blue">
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<h3>Finding 2</h3>
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<p>Progressive disclosure tests whether an Agent knows what to ask.</p>
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</div>
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<div class="course-card purple">
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<h3>Finding 3</h3>
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<p>Objective state checks are stronger than judging the final prose alone.</p>
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</div>
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</div>
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<!-- Presenter cue: Tie each finding to something viewers just observed; distinguish evidence from interpretation. -->
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---
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layout: center
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---
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<div class="course-kicker course-kicker-red">Where the claim stops</div>
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# Boundary condition
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<div class="course-boundary">A simulator is useful only within its fidelity envelope; its omissions and biases become the Agent's test world.</div>
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<!-- Presenter cue: Say explicitly what this experiment does not establish. -->
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---
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layout: center
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---
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<div class="course-kicker">Engineering takeaway</div>
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# Design rule
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<div class="course-rule">Define the initial state, allowed transitions, and external success check before writing evaluation prompts.</div>
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<!-- Presenter cue: Present this as a reusable decision rule, then give one counterexample or trade-off. -->
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---
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# Continue the experiment · 1/2
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<div class="grid grid-cols-2 gap-4 mt-6">
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<a class="course-link" href="../chapter6/tau2-bench/">
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<span class="course-link-title">Experiments 6-1 and 6-2: tau2-bench</span>
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<span class="course-link-path">chapter6/tau2-bench/</span>
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</a>
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<a class="course-link" href="../chapter6/terminal-bench/">
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<span class="course-link-title">Terminal-Bench reproduction</span>
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<span class="course-link-path">chapter6/terminal-bench/</span>
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</a>
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<a class="course-link" href="../chapter6/SWE-bench/">
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<span class="course-link-title">SWE-bench reproduction</span>
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<span class="course-link-path">chapter6/SWE-bench/</span>
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</a>
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<a class="course-link" href="../chapter6/GAIA/">
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<span class="course-link-title">GAIA reproduction</span>
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<span class="course-link-path">chapter6/GAIA/</span>
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</a>
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</div>
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<!-- Presenter cue: Point viewers to the companion paths; do not walk through every extension. -->
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---
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# Continue the experiment · 2/2
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<div class="grid grid-cols-2 gap-4 mt-6">
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<a class="course-link" href="../chapter6/OSWorld/">
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<span class="course-link-title">OSWorld reproduction</span>
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<span class="course-link-path">chapter6/OSWorld/</span>
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</a>
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<a class="course-link" href="../chapter6/android-world/">
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<span class="course-link-title">AndroidWorld source and analysis</span>
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<span class="course-link-path">chapter6/android-world/</span>
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</a>
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<a class="course-link" href="../chapter6/openvla-robotwin2-eval/">
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<span class="course-link-title">OpenVLA + RoboTwin2 design</span>
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<span class="course-link-path">chapter6/openvla-robotwin2-eval/</span>
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</a>
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</div>
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<!-- Presenter cue: Point viewers to the companion paths; do not walk through every extension. -->
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---
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layout: center
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class: text-center
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---
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<div class="course-kicker">Pause and apply</div>
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# Your turn
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<div class="course-big course-reflection">Which production state would reveal success even if the Agent's final message were hidden?</div>
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<!-- Presenter cue: Invite viewers to pause the video. Offer your own answer after a short beat. -->
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---
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layout: center
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class: text-center
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---
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<div class="course-kicker">Next · Lesson 23</div>
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<div class="course-next">Turn observable outcomes into metrics that are consistent, diagnostic, and hard to game.</div>
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<div class="course-next-arrow">→</div>
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<!-- Presenter cue: Use this transition to make the course feel continuous rather than episodic. -->
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