<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Mar 21, 2022 at 1:39 PM William Flynn Wallace 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="ltr"><div style="font-family:"comic sans ms",sans-serif;font-size:large;color:rgb(0,0,0)">There is no cube there, not anything 3 D.  Yet our perceptions are very strong.  bill w</div></div></blockquote><div><br></div><div>That's what I'm trying to say, the necker cube is not 3D  But your knowledge definitely is 3D.  There must be some objectively observable structures in your brain, which is this 3D knowledge, which you can change.</div><div>People are starting to be able to observe some of these 3D structures, with fMRA observations and such.</div><div><a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3761598/">https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3761598/</a><br></div><div><a href="https://www.frontiersin.org/articles/10.3389/fnhum.2012.00051/full">https://www.frontiersin.org/articles/10.3389/fnhum.2012.00051/full</a><br></div><div><a href="https://www.researchgate.net/figure/Thresholded-fMRI-surface-rendered-activation-images-superimposed-on-standard-structural_fig1_12599288">https://www.researchgate.net/figure/Thresholded-fMRI-surface-rendered-activation-images-superimposed-on-standard-structural_fig1_12599288</a><br></div><div>and many more...</div><div><br></div><div><br></div><div><br></div><div> </div></div></div>