<div dir="ltr"><div class="gmail_quote"><br><div dir="ltr"><p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif"><span style="color:black">The Center for Philosophy of
Science invites you to join us for our Lunch Time Talks.  Attend in
person, Room 1117 on the 11th floor of the Cathedral of Learning at the
University of Pittsburgh or visit our live stream on YouTube at </span><u><span style="color:blue"><a href="https://www.youtube.com/channel/UCrRp47ZMXD7NXO3a9Gyh2sg" title="https://www.youtube.com/channel/UCrRp47ZMXD7NXO3a9Gyh2sg" style="color:blue" target="_blank">https://www.youtube.com/channel/UCrRp47ZMXD7NXO3a9Gyh2sg</a></span></u><span style="color:black">.    </span></p>

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<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif"><b><span style="color:black">LTT: </span></b><b><u><span style="font-size:14pt;color:blue">Lucy James </span></u></b><span style="color:black"></span></p>

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<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif"><span style="color:black">Tuesday, </span>October 15th<span style="color:black"> @ 12:00 pm - 1:30 pm E</span>DT<span style="color:black"></span></p>

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<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif"><b><span style="color:black">Title: </span>Primordial
Black Holes in Perspective</b></p>

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<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif"><b><span style="color:black">Abstract:</span></b><span style="color:black"></span></p>

<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif">This talk gives an illustration of some general ideas about
perspectival disagreement, using the case of primordial black holes (PBHs).
Some theoretical arguments for their existence are considered, alongside a
cursory review of some literature discussing the possibility of acquiring
empirical data that would distinguish primordial from astrophysical black
holes. Finally, and most substantially, a putative explanatory role of PBHs is
discussed in the context of matter formation and spacetime ’emergence’. Differences
between the ways in which PBHs are understood from alternative perspectives are
pointed out: PBHs have (some) different properties depending on whether they
are being studied by the mathematical general relativist, the experimentally
inclined astrophysicist, or the speculative cosmologist. Such perspectival
disagreement need not be indicative of ontological pluralism. It is argued
instead that instances of perspectival disagreement point to physics being an
incomplete enterprise, whose evolution is unavoidably constrained by epistemic
limitations. Unificatory projects are considered progressive, since such
projects provide the most likely sources of metaphysical insight when they are
successful. Adding precision to our understanding of the salient
characteristics of the perspectives in question, when perspectival disagreement
occurs, can pave the way for more successful unification projects.</p>

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<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif"><b>Can’t make it in-person? This talk will available online
through the following:</b></p>

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<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif">Zoom:  <a href="https://pitt.zoom.us/j/99322492076" style="color:blue" target="_blank">https://pitt.zoom.us/j/99322492076</a><span style="color:black"></span></p>

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<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif"><span style="color:black">YouTube at: </span><u><span style="color:blue"><a href="https://www.youtube.com/channel/UCrRp47ZMXD7NXO3a9Gyh2sg" style="color:blue" target="_blank">https://www.youtube.com/channel/UCrRp47ZMXD7NXO3a9Gyh2sg</a></span></u><span style="color:black">.</span></p>

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<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif"><b><span style="color:black">LTT: </span></b><b><u><span style="font-size:14pt;color:blue">Bob Batterman</span></u></b><span style="color:black"></span></p>

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<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif"><span style="color:black">Friday, </span>October 18th<span style="color:black"> @ 12:00 pm - 1:30 pm E</span>DT<span style="color:black"></span></p>

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<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif"><b><span style="color:black">Title: </span>Deep
Learning, Correlations, and the Statistics of Natural Images</b></p>

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<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif"><b><span style="color:black">Abstract:</span></b><span style="color:black"></span></p>

<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif">In this paper I will highlight certain connections between
Deep Neural Networks (DNNs) and Renormalization Group methods in statistical
physics.  I will suggest that some of these similarities can be exploited
to understand why some DNNs can be so successful.  Specifically, I will
suggest that DNNs generalize as well as they do because their training allows
them to discover/recover certain remarkably robust statistical regularities
present in their (diverse) training data sets. </p>

<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif"><b> </b></p>

<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif"><b>Can’t make it in-person? This talk will available online
through the following:</b></p>

<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif"><span style="color:black"> </span></p>

<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif">Zoom:  <a href="https://pitt.zoom.us/j/94223992589" style="color:blue" target="_blank">https://pitt.zoom.us/j/94223992589</a><span style="color:black"></span></p>

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<p class="MsoNormal" style="margin:0in;font-size:12pt;font-family:Aptos,sans-serif"><span style="color:black">YouTube at: </span><u><span style="color:blue"><a href="https://www.youtube.com/channel/UCrRp47ZMXD7NXO3a9Gyh2sg" style="color:blue" target="_blank">https://www.youtube.com/channel/UCrRp47ZMXD7NXO3a9Gyh2sg</a></span></u><span style="color:black">.</span></p>

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