<div dir="ltr"><div class="gmail_quote"><div dir="ltr"><div style="border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-variant-alternates:inherit;font-stretch:inherit;line-height:inherit;font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0in;padding:0px;vertical-align:baseline;color:rgb(0,0,0)"><font size="4">The Center for Philosophy of Science invites you to join us for Lucy's Lunch Time Talk.  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 style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;border:0px;margin:0px;padding:0px;vertical-align:baseline;color:blue"><u><a title="https://www.youtube.com/channel/UCrRp47ZMXD7NXO3a9Gyh2sg" id="m_8340822045948769138gmail-OWAc42c3ad6-a998-a88f-2100-fb243974f1d6" rel="noopener noreferrer" href="https://www.youtube.com/channel/UCrRp47ZMXD7NXO3a9Gyh2sg" style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0px;padding:0px;vertical-align:baseline;color:blue" target="_blank">https://www.youtube.com/channel/UCrRp47ZMXD7NXO3a9Gyh2sg</a></u></span>.    </font></div><div aria-hidden="true" style="border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-variant-alternates:inherit;font-stretch:inherit;line-height:inherit;font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0in;padding:0px;vertical-align:baseline;color:rgb(0,0,0)"><font size="4"> </font></div><div style="border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-variant-alternates:inherit;font-stretch:inherit;line-height:inherit;font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0in;padding:0px;vertical-align:baseline;color:rgb(0,0,0)"><font size="4"><span style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;border:0px;margin:0px;padding:0px;vertical-align:baseline"><b>LTT: </b></span><span style="font-family:inherit;font-style:inherit;font-variant:inherit;font-weight:inherit;border:0px;font-stretch:inherit;line-height:inherit;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0px;padding:0px;vertical-align:baseline;color:blue"><b><u>Lucy James </u></b></span><br></font></div><div style="border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-variant-alternates:inherit;font-stretch:inherit;line-height:inherit;font-family:Aptos,sans-serif;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0px;padding:0px;vertical-align:baseline;color:black">Take 5 Minutes with Lucy as she discusses her research and work here at the Center:  <a id="m_8340822045948769138gmail-LPlnk948908" rel="noopener noreferrer" href="https://youtu.be/tPROsG2Wv5E" style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0px;padding:0px;vertical-align:baseline" target="_blank">https://youtu.be/tPROsG2Wv5E</a></div><p style="margin:0in;color:rgb(36,36,36);font-family:Aptos,sans-serif"><span style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0px;padding:0px;vertical-align:baseline;color:black"> </span></p><p style="margin:0in;color:rgb(36,36,36);font-family:Aptos,sans-serif"><br></p><p style="margin:0in;color:rgb(36,36,36);font-family:Aptos,sans-serif"><font size="4"><span style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0px;padding:0px;vertical-align:baseline;color:black">Tuesday, </span>October 15th<span style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0px;padding:0px;vertical-align:baseline;color:black"> @ 12:00 pm - 1:30 pm E</span>DT</font></p><p style="margin:0in;color:rgb(36,36,36);font-family:Aptos,sans-serif"><span style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0px;padding:0px;vertical-align:baseline;color:black"><b><font size="4"> </font></b></span></p><p style="margin:0in;color:rgb(36,36,36);font-family:Aptos,sans-serif"><font size="4"><span style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0px;padding:0px;vertical-align:baseline;color:black"><b>Title: </b></span><b>Primordial Black Holes in Perspective</b></font></p><p style="margin:0in;color:rgb(36,36,36);font-family:Aptos,sans-serif"><span style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0px;padding:0px;vertical-align:baseline;color:black"><b><font size="4"> </font></b></span></p><p style="margin:0in;color:rgb(36,36,36);font-family:Aptos,sans-serif"><span style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0px;padding:0px;vertical-align:baseline;color:black"><b><font size="4">Abstract:</font></b></span></p><p style="margin:0in;color:rgb(36,36,36);font-family:Aptos,sans-serif"><font size="4">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.</font></p><p aria-hidden="true" style="margin:0in;color:rgb(36,36,36);font-family:Aptos,sans-serif"><font size="4"> </font></p><p style="margin:0in;color:rgb(36,36,36);font-family:Aptos,sans-serif"><b><font size="4">Can’t make it in-person? This talk will available online through the following:</font></b></p><p style="margin:0in;color:rgb(36,36,36);font-family:Aptos,sans-serif"><span style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0px;padding:0px;vertical-align:baseline;color:black"><font size="4"> </font></span></p><p style="margin:0in;color:rgb(36,36,36);font-family:Aptos,sans-serif"><font size="4">Zoom:  <span style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0px;padding:0px;vertical-align:baseline;color:blue"><u><a id="m_8340822045948769138gmail-OWAd3d98bd9-070b-1f1a-3518-5bef19389b09" rel="noopener noreferrer" href="https://pitt.zoom.us/j/99322492076" style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;margin:0px;padding:0px;vertical-align:baseline;color:blue" target="_blank">https://pitt.zoom.us/j/99322492076</a></u></span></font></p><p style="margin:0in;color:rgb(36,36,36);font-family:Aptos,sans-serif"><span style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-size-adjust:inherit;font-kerning:inherit;font-f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