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<p>Nick -</p>
<p> Nice complement to "Your opinion of me is none of my
business".</p>
<p>- Steve<br>
</p>
<o:p></o:p>
<blockquote type="cite"
cite="mid:013a01d6ce82$9ab4aa50$d01dfef0$@gmail.com">
<div class="WordSection1">
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><span
style="font-size:20.0pt;font-family:Algerian">Never explain
yourself: you don’t know a damn thing about yourself, and
everybody Else already knows more than they want to know. <o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Back to the couch, <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Nick<o:p></o:p></p>
<p class="MsoNormal">Nicholas Thompson<o:p></o:p></p>
<p class="MsoNormal">Emeritus Professor of Ethology and
Psychology<o:p></o:p></p>
<p class="MsoNormal">Clark University<o:p></o:p></p>
<p class="MsoNormal"><a href="mailto:ThompNickSon2@gmail.com"
moz-do-not-send="true"><span style="color:#0563C1">ThompNickSon2@gmail.com</span></a><o:p></o:p></p>
<p class="MsoNormal"><a
href="https://wordpress.clarku.edu/nthompson/"
moz-do-not-send="true"><span style="color:#0563C1">https://wordpress.clarku.edu/nthompson/</span></a><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> Friam
<a class="moz-txt-link-rfc2396E" href="mailto:friam-bounces@redfish.com"><friam-bounces@redfish.com></a> <b>On Behalf Of </b>David
Eric Smith<br>
<b>Sent:</b> Wednesday, December 9, 2020 7:25 AM<br>
<b>To:</b> The Friday Morning Applied Complexity Coffee
Group <a class="moz-txt-link-rfc2396E" href="mailto:friam@redfish.com"><friam@redfish.com></a><br>
<b>Subject:</b> [FRIAM] More on social mobility<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">To continue to try to add raw material to
the discussion that EricC took up on this when I made some
overly-simple claims earlier, here is a Brookings summary
article on work by Raj Chetty (cited in the earlier thread as
well):<o:p></o:p></p>
<div>
<p class="MsoNormal"><a
href="https://www.brookings.edu/blog/social-mobility-memos/2018/01/11/raj-chetty-in-14-charts-big-findings-on-opportunity-and-mobility-we-should-know/"
moz-do-not-send="true">https://www.brookings.edu/blog/social-mobility-memos/2018/01/11/raj-chetty-in-14-charts-big-findings-on-opportunity-and-mobility-we-should-know/</a><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">A thing I find striking in Chetty’s
output is how many compilations he can produce that make
statistical analysis superfluous. There are data that are
so close to a perfect line that there is little for a
regression to do, or that are so consistent with
time-constancy that there is no suggestion of a signal to
look for other than stasis. A lot of it seems to come from
finding good conditions on which to bin data, though the bin
categories do not seem highly artificial or cherry-picked,
to me.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">I got to the above from an article by
Edsall that, again, seems to me well-sourced:<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><a
href="https://www.nytimes.com/2020/12/09/opinion/trump-social-status-resentment.html"
moz-do-not-send="true">https://www.nytimes.com/2020/12/09/opinion/trump-social-status-resentment.html</a><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">So probably necessary to refuse to speak
in sound-bites about income or wealth mobility, and to use
more complete sentences that refer to specific conditions,
even though if one has that granularity, there are
interpretations of the sound-bite that mobility has been
badly impaired that still seem correct, to me.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">EricS<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
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