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      <div class="flex flex-wrap justify-between gap-3"><div class="mono text-sm">EXP-042 · onboarding-checklist</div><div class="label">Growth lab notebook</div></div>
      <h1 class="mt-8 text-5xl font-extrabold leading-[.98]">Result: iterate before full rollout.</h1>
      <p class="mt-5 max-w-3xl text-lg leading-8 text-[var(--muted)]">The checklist appears to improve activation, but the data-source step adds support friction and the test lacks formal significance calculation.</p>
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        <div class="bg-white/70 border border-[var(--line)] p-4"><div class="label">Primary lift</div><div class="text-4xl font-extrabold mt-2 text-[var(--green)]">+5.5pp</div></div>
        <div class="bg-white/70 border border-[var(--line)] p-4"><div class="label">Samples</div><div class="text-4xl font-extrabold mt-2">3641</div></div>
        <div class="bg-white/70 border border-[var(--line)] p-4"><div class="label">Caveat</div><div class="text-2xl font-extrabold mt-3 text-[var(--amber)]">Directional</div></div>
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      <table><thead><tr><th>Metric</th><th>Control</th><th>Variant</th><th>Interpretation</th></tr></thead><tbody>
        <tr><td><b>Activation</b></td><td>21.4%</td><td>26.9%</td><td>Positive signal</td></tr>
        <tr><td><b>Invite teammate</b></td><td>38.1%</td><td>47.4%</td><td>Main driver</td></tr>
        <tr><td><b>Support tickets</b></td><td>6.2</td><td>7.1</td><td>Friction introduced</td></tr>
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      <div class="sheet p-5"><div class="label">Next experiment</div><p class="mt-3 text-sm leading-6">Split "connect data source" into "skip now" and "connect later."</p></div>
      <div class="sheet p-5"><div class="label">Instrumentation</div><p class="mt-3 text-sm leading-6">Calculate p-value or Bayesian posterior before 100% rollout.</p></div>
      <div class="sheet p-5"><div class="label">Decision</div><p class="mt-3 text-sm leading-6">Ship to 50% with friction fix and support monitoring.</p></div>
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