<div dir="ltr"><div>Sorry about Blackbird wiki URL! </div><div><br></div><div><a href="https://en.wikipedia.org/wiki/Blackbird_(wind-powered_vehicle)">https://en.wikipedia.org/wiki/Blackbird_(wind-powered_vehicle)</a></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><br></div><img src="https://ci3.googleusercontent.com/mail-sig/AIorK4zxepmnLIKmYitiu77ai2nm7FH3JgppsFmboNJcBNbCpE2xbStskZTbPr8HLs0B93HPIiuiX1E"><br><div>Don Cooke, Site 523, 603.219.9259<br></div></div></div></div><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Tue, Jul 8, 2025 at 11:25 AM Donald Cooke <<a href="mailto:doncooke2@gmail.com">doncooke2@gmail.com</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>I file this in the same part of my brain where I put Blackbird. </div><div><br></div><div><a href="https://en.wikipedia.org/wiki/Blackbird_(wind-powered_vehicle)powered_vehicle" target="_blank">https://en.wikipedia.org/wiki/Blackbird_(wind-powered_vehicle)powered_vehicle</a>)</div><div><br></div><div>I don't know Rick, but I do know most of his buddies from SporTVision.</div><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><br></div><img src="https://ci3.googleusercontent.com/mail-sig/AIorK4zxepmnLIKmYitiu77ai2nm7FH3JgppsFmboNJcBNbCpE2xbStskZTbPr8HLs0B93HPIiuiX1E"><br><div>Don Cooke, Site 523, 603.219.9259<br></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jul 8, 2025 at 9:57 AM Peter Albin via LCTG <<a href="mailto:lctg@lists.toku.us" target="_blank">lctg@lists.toku.us</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"><br>
<a href="https://www.scientificamerican.com/article/maths-block-stacking-problem-has-a-preposterous-solution/" rel="noreferrer" target="_blank">https://www.scientificamerican.com/article/maths-block-stacking-problem-has-a-preposterous-solution/</a><br>
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Peter<br>
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