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.

Virgin Galactic finally admitted to its engine troubles on Friday.

Virgin Galactic finally admitted to its engine troubles on Friday.

They have dumped the original engine, switching to a different engine design that the rumors have said they have been testing for the past year.

The company press release is here, with commentary here.

Though it is a good thing that the company has finally come clean and made the switch, they probably waited far too long to do it, as the problems with the old engine likely caused several years delay in their schedule, allowing other companies to catch up with them and thus losing the significant technological advantage that they once held.


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  • Sayomara

    The first step is admitting there is a problem

  • Pzatchok

    The whole of the engine design is flawed. Just changing the solid fuel will not help much. It will never correct the real problem.

    Adding He to the mix is not a solution either. Just a patch job.

    By adding the oxidizer to the top of the engine away from the nozzle you create a situation in which the burn chamber is ever changing and changing in unpredictable ways.

    I bet they added a few knock sensors to the side of the engine and tried adding He as needed to keep the vibrations down. Sort of like they add less or more fuel and change the ignition timing to keep knocks out of internal combustion car engines. It works but only to a point. While stopping knocks it lowers engine power.

    Since VG has recently stated they will not be able to reach space even with the new engines I bet they found that out.

  • Kelly Starks

    This could impact Dream Chaser as well. The company that makes it also makes the SS2 engines – and uses the same kind of engines on the DC. ….with issues they don’t like to admit to.

  • Kelly Starks

    Well really, hybrids are a dump system. You kinda mix the problems with solids, liquids, and pressurized feed systems, with out really getting the best of any of them.

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