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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>>…Subject:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Re: [ExI] Fermi Paradox and Transcension<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On 12 September 2012 23:02, Keith Henson <<a href="mailto:hkeithhenson@gmail.com" target="_blank">hkeithhenson@gmail.com</a>> wrote:<o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>>…</span>Talking to someone on the far side of a one AU orbit has a subjective<br>delay of a few thousand years<span style='color:#1F497D'>…<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Ja, but we have a solution to that: we have MBrain nodes which relay messages to the recipient on the far side of the orbit.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Here’s something cool for you. We know that EM signals drop off as the inverse square of the distance. If you need to send a signal 1 distance AU and it takes 1 erg with some transmitter/receiver combination, then sending that same signal 2AU requires four ergs, 4 AU takes 16 erg and so on. But if you get a second transmitter/receiver pair and station it between the 4AU points at 2 AU, then receive and retransmit the signal, then you have 2 transmitters, each using 4 ergs for a total of 8 ergs. If you add two more receiver/transmitters, you have a total of 4 transmitters using 1 erg each, for a total of 4, and so on.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>There is no theoretical limit to the process: adding more transmitters each sending the signal a shorter distance decreases the total energy needed to send a signal, at the expense of signal delay.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Here’s the cool part: the interconnections between our nerve cells are not electric wires, but rather a waveguide of sorts which is a functional equivalent to a signal path of continuous receivers and transmitters. The signal along a dendrite is constantly amplified all along the path, which means it is optimized in a sense for using the least amount of energy possible. This comes at the expense of speed, for signals do not pass through the brain at the speed of light or at the speed of current in a wire, but rather create a series of chemical reactions along the dendrite at a speed of about 100 meters per second. In return for the loss of speed, our brains do not cook us inside our own skulls from waste heat. Sounds like a fair trade to me, ja?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Evolution has discovered a wicked cool solution to electrical resistance of a neuron signal to the next neuron.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The MBrain model I suggested yesterday would have something vaguely analogous: each node would communicate directly with only about 5000 to 10000 other nodes, possibly less than that. Then for signals to be passed a long distance, they would need to be received and retransmitted by other nodes along the path.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>spike<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Actually I think I may have gone off on a tangent Keith did not intend. He said subjective delay, which makes me think he was talking about something else, but I missed the original post somehow.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div></div></body></html>