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<h2 class="hd hd-2 unit-title">Introduction</h2>
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<h3 class="hd hd-2">Video: Introduction to Lecture 8</h3>
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<h4 class="hd hd-5">Transcripts</h4>
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<p><span style="font-family: book\ antiqua, palatino;">This lecture includes some optional exercises, but <strong>no final evaluation</strong> because the content is a little trickier than usual. So this lecture won't count towards your final grade. You can think of it is an optional detour. It's an awesome detour, though. I recommend that you at least have a look.</span></p>
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<p><span style="font-family: book\ antiqua, palatino;">If you'd like an informal introduction to the Banach-Tarski Theorem, I recommend <a href="https://www.youtube.com/watch?v=s86-Z-CbaHA" target="[object Object]">this Youtube video</a>, by Vsauce.</span></p>
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