<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Apr 15, 2016 at 12:55 AM, Adrian Tymes <span dir="ltr"><<a href="mailto:atymes@gmail.com" target="_blank">atymes@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span class="">On Thu, Apr 14, 2016 at 6:51 PM, Stephen Van Sickle <span dir="ltr"><<a href="mailto:sjv2006@gmail.com" target="_blank">sjv2006@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">They have a good page on the challenges involved. <div><br></div><div><a href="http://breakthroughinitiatives.org/Challenges/3" target="_blank">http://breakthroughinitiatives.org/Challenges/3</a><br><br></div></div></blockquote></span><div>Read it. It answers some of my objections but not all. Most notably, how do they keep the project running for the 20 years they estimate (plus time for the signal to get back), such that someone will be listening (and know how to listen) when the signal from the fly-by returns? (And then there's still, "it's a fly-by; this isn't sustainable, it'll be more thrown away effort for no development gain.")</div></div></div></div></blockquote><div><br></div><div>### Being able to build a starship capable of reaching a star in non-geological timeframes is already a significant development gain. Sure, to build a colonizing starship you would need to scale up enough to construct a decelerating laser at destination, and you would need enough of autonomous AI and nanotech production capacity to seed a technological civilization but, as they say, the journey of a thousand miles starts with one step.</div><div><br></div><div>Rafał</div></div>
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