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Comment yes (Score 2) 416

Yes,
      we have something here as exciting as cold fusion or polywater. it seems to violate newtons second law so people are looking for the escape clause. If it's real it's a huge deal because it means the fundamental problem of space travel--- bringing your propellant--- is permanently solved modulo the nitty gritty of making it more efficient.

On the otherhand, like polywater and cold fusion it's likely a reproducible experimental error that's not been identified yet. 3 groups have independently observed it so far.

My guess: it's just ions sputtered off the walls and accelerated or it's attraction towards an induced dipole in the room, neither of which would be exciting.

Comment Re:Conservation of momentum (Score 1) 480

The EmDrive uses a sealed cavity. There's nowhere for any propellant to come out, even if there were any!

sure, the only thing it could do if it remained sealed would be emit black body radiation, and the whole reason this report is interesting is that it's apparently moving a lot more than you'd get from such a result. well, perhaps it could offgas, that's been mentioned elsewhere.

Comment Re:Conservation of momentum (Score 1) 480

I totally understand what you're saying, and I agree entirely, except when it comes to conservation of momentum. It's a simple concept that is necessary for this Universe to make any sense and be stable in any way.

Not really. There may be well-defined circumstances in which it can be violated, which rarely occur in the "natural" order of things. In theory, planets can make their own functional electronic circuits through ordinary volcanic and geologic processes, in practice... 42, I guess. It has long been observed that the laws of physics seem to break down at very high and very low energy states. If they behave themselves at most other times, then most things will behave in a way that is highly predictable at most times.

Comment Re:Facebook is G+'s best advertising (Score 1) 51

An honest question - what is different about G+'s interface or paradigm (compared to Facebook) that gets people to post content that makes you like them more?

I'm not really sure. Somehow G+ seems more oriented towards seeing stuff from disparate sources. I just find more stuff to reshare.

Comment Save the GOP; Save the Elephants (Score 4, Interesting) 347

I'm still registered as a Republican and I agree with this. Many years ago, when my daughter was little, I remember her picking up a discarded coke can and placing it in a trash bin at the park. A young man standing nearby said, in the kind of patronizing voice that some people use with children, "Yes, people should learn to recycle." I responded, "I would settle for them just throwning away their trash properly." My point being, that teaching recycling while people are just tossing trash around is putting the cart before the horse. Twenty years down the road, and the situation is worse than ever. I have actually witnessed people just open their car window and toss out the McDonald's bag without even slowing down. How can you expect people to understand something as complex as global warming when you can't even get them to put their garbage in the trash can?

Maybe a good start is to show Republicans that their vaunted mascot for their party, the elephant, is going extinct. They might deny global warming, but it's pretty hard for them to deny the fact that elephants are disappearing from the planet, mainly due to people. Maybe we could get them to see the disappearance of the elephants as a harbinger of their own loss of popularity. Perhaps if we could get the GOP to save their pachyderms, they could learn something important in the process.

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