Conscious Choice cover

From the press release: In this ground-breaking new history of early America, historian Robert Zimmerman not only exposes the lie behind The New York Times 1619 Project that falsely claims slavery is central to the history of the United States, he also provides profound lessons about the nature of human societies, lessons important for Americans today as well as for all future settlers on Mars and elsewhere in space.

 
Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space, is a riveting page-turning story that documents how slavery slowly became pervasive in the southern British colonies of North America, colonies founded by a people and culture that not only did not allow slavery but in every way were hostile to the practice.  
Conscious Choice does more however. In telling the tragic history of the Virginia colony and the rise of slavery there, Zimmerman lays out the proper path for creating healthy societies in places like the Moon and Mars.

 

“Zimmerman’s ground-breaking history provides every future generation the basic framework for establishing new societies on other worlds. We would be wise to heed what he says.” —Robert Zubrin, founder of founder of the Mars Society.

 

Available everywhere for $3.99 (before discount) at Amazon, Barnes & Noble, and all ebook vendors, or direct from the ebook publisher, ebookit. And if you buy it from ebookit you don't support the big tech companies and I get a bigger cut much sooner.


World record for largest 3D printed object

Oak Ridge National Laboratory has entered the Guinness record books with the successful printing of the world’s largest 3D printed object.

Made from carbon fiber and ABS thermoplastic composite materials, the new tool measures 17.5 x 5.5 x 1.5 ft (5.3 x 1.7 x 0.5 m) and weighs around 1,650 lb (748 kg). To meet the requirements of the record, the item needed to be one solid piece of 10.6 cubic ft (0.3 cubic m), which a Guinness World Records judge confirmed at a ceremony. “The recognition by Guinness World Records draws attention to the advances we’re making in large-scale additive manufacturing composites research,” says Vlastimil Kunc, leader of [Oak Ridge] team. “Using 3D printing, we could design the tool with less material and without compromising its function.”

Of course, the tool wasn’t designed just for world record glory: printable in just 30 hours, it’s an impressive time and cost saver, considering the existing metal version currently takes about three months to manufacture. [emphasis mine]

The highlighted text illustrates in one sentence why there is a push toward 3D printing. It is cheaper, faster, and will eventually provide much greater flexibility.

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One comment

  • Localfluff

    I think one can add “higher quality” to the generic advantages with 3D printing, since there is (potential to) control the material of a solid object all through at a microscopic level. A melted metal poured risks acquiring internal defects from how it slushes, how it vibrates while cooling, how fast it cools from different directions, impurities. I bet this record won’t hold for many weeks.

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