<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr">On Jun 30, 2021, at 10:53 AM, William Flynn Wallace via extropy-chat <extropy-chat@lists.extropy.org> wrote:</div><blockquote type="cite"><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:large;color:#000000">Yes, of course, but what of their vocalizations are actually laughter? That would take brain studies. bill w</div></div></div></blockquote><div><br></div><div><div dir="ltr">I don’t think anyone’s saying this is the last word, though it looks like good evidence at this point that laughter isn’t peculiarly human.</div><div dir="ltr"><br></div><div dir="ltr">Also, brain studies would simply add more here — presuming that the same neurological mechanisms underly laughter/play vocalizations in species that aren’t that closely related — like those of rodents and of birds. (Yeah, I’d guess that since primates and rodents have similar behaviors here that would mean this stuff likely is more basal (as opposed to independently evolved in different clades), so maybe there’s some very basic neural stuff shared between them that’d be easy to spot. A loose analogy: I wouldn’t to say only bats fly because eagles, butterflies, and pterodactyls use different muscles and different neurology to move about in the air.)</div><div dir="ltr"><br></div><div dir="ltr">Regards,</div><div dir="ltr"><br></div><div dir="ltr">Dan</div></div><div dir="ltr"><br></div><blockquote type="cite"><div dir="ltr"><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jun 30, 2021 at 11:44 AM Dan TheBookMan via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org">extropy-chat@lists.extropy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div dir="ltr">On Jun 30, 2021, at 6:35 AM, spike jones via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org" target="_blank">extropy-chat@lists.extropy.org</a>> wrote:</div><blockquote type="cite"><div dir="ltr"><div><div><p class="MsoNormal"><span style="font-size:18pt;font-family:"Comic Sans MS"">We all need more laughter in our lives. Of all beasts, I know of no other species that does that, and just think about how much of a waste that is.</span></p></div></div></div></blockquote><br><div>See <a href="http://www.bioacoustics.info/article/play-vocalizations-and-human-laughter-comparative-review" target="_blank">http://www.bioacoustics.info/article/play-vocalizations-and-human-laughter-comparative-review</a></div><div><br></div><div>Regards,</div><div><br></div><div>Dan</div></div></blockquote></div></div></blockquote></body></html>