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European Space Agency Picks Site For First Comet Landing In November

geogob Re:Sounds challenging. (35 comments)

The triangular path is only the approach path. The goal is to reach a stable orbit around the comet,.

4 hours ago
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European Space Agency Picks Site For First Comet Landing In November

geogob Re:Sounds challenging. (35 comments)

The probe is in orbit around the comet, and a quite peculiar orbit too. So regardless of what the comet does, from the reference point of the probe, it is "rotating".

yesterday
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Comcast Allegedly Asking Customers to Stop Using Tor

geogob Re:So-to-speak legal (379 comments)

Perhaps doing both would actually be the right course, but I initially meant "pressing charges". sorry for the confusion.

yesterday
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Comcast Allegedly Asking Customers to Stop Using Tor

geogob Re:So-to-speak legal (379 comments)

I understand that in most states, no proof of damage must be given. In many states, the statement itself suffices. An audience is not necessary.

But hey, IANAL. And especially defamation legislation is tricky in the US. Regardless I would press charges (which is more accurately said than "sue them").

yesterday
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Comcast Allegedly Asking Customers to Stop Using Tor

geogob Re: So-to-speak legal (379 comments)

I guess the (other) neighbours will be back from vacation any day know.

yesterday
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Comcast Allegedly Asking Customers to Stop Using Tor

geogob Re:So-to-speak legal (379 comments)

I use a car every they. I guess that makes me a bank robber. You know, could use it as a get away car.

My neighbor also suspect me of murder an cannibalism. He saw me through the kitchen window with a butcher knife and used the BBQ the whole summer. Furthermore, the other neighbors haven't been seen since beginning of the vacation period. All hard evidence...

Seriously, I don't know if you were trying to be funny or sarcastic... but I hope it was either one of those.

yesterday
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Comcast Allegedly Asking Customers to Stop Using Tor

geogob Re:So-to-speak legal (379 comments)

I would sue them for defamation, if I were one of their Tor-using customer.

It's a grave offence to imply someone is engaged in criminal activity, without actually having evidence of such activity.

yesterday
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New Details About NSA's Exhaustive Search of Edward Snowden's Emails

geogob Re:This is the guy who decides? (188 comments)

Forget the tinfoil hat.

Obviously, any email discussing the existence and raising concern about highly classified programs will be also classified as such. Most likely these emails would be removed or redacted to before any review of the email could take place. I am pretty certain emails shouldn't contain highly classified information, hence the people reviewing the emails will most likely not have the security clearance to review highly classified materials. Assuming they are classified as such, not only do they not have to admit of their existence, they are not allowed to admit it.

I am really not a fan on conspiracy theories, nor do I prone propagating them. On the contrary.
Although this might sound like one, for me it feels more like standard procedures and due process that turned out to be quite convenient.

yesterday
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Universal Big Bang Lithium Deficit Confirmed

geogob Re:Quite accurately? (170 comments)

No I don't get it and you are wrong.

Your example has as nothing to do with accuracy. I'll help you.

According to Oxford :

The degree to which the result of a measurement, calculation, or specification conforms to the correct value or a standard.

In other word, the accuracy of a model results tells you how good it represents the real world. What you (and all others who so kindly replied to my original comment) are referring to is precision.

So, following your example, both model A and B would be inaccurate, but model B would be more precise than model A. Using ISO terminology, model A and B would show a bad trueness, and A would be less precise than B.

4 days ago
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Scientists Capture the Sound Made By a Single Atom

geogob Re:phonon is a widely accepted term (100 comments)

Exactly correct. In addition, a believe the commenter wanted to point out that it IS an established term, albeit one not often used in the context of quantum physics.

4 days ago
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Scientists Capture the Sound Made By a Single Atom

geogob Re:phonon is a widely accepted term (100 comments)

Every one who followed a lecture on solid state physics should know what a phonon is. And I mean a first year lecture, not one of those fancy specialization.
This implies a lot of people never heard of it... but also that a lot of people did (or should have).

4 days ago
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Universal Big Bang Lithium Deficit Confirmed

geogob Re:Quite accurately? (170 comments)

No. If you have stable equations, you have stable equations. Period. It only means that the result will not strongly diverge with a small perturbation.

How these equations represent the real world (ie. how accurate the results are) has nothing to do with their stability. And this is exactly what the point of the whole story is... the equations, regardless if stable or not, do not represent the observed reality.

4 days ago
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Universal Big Bang Lithium Deficit Confirmed

geogob Re:Quite accurately? (170 comments)

To say you can calculate quite accurately an expected value makes no sense a all. I can only understand that they estimate the value using models and believe these models to be accurate. Any other signification is senseless and it would be pointless to argue over it.

Furthermore, you can't asses the accuracy of an estimation with a model. The model is, as you point it yourself out, what gives the estimated value. Only a measurement can validate the estimation and the model.
Their models gave prediction for the other elements and observations showed that the model was pretty much spot on. Using the same approach for Li, they assumed (or hope for) a similar accuracy. Observation now show that it wasn't the case.

But the point of the statement was that the believed it would be accurate (again, because any other interpretation of the sentence makes no sense at all). If it is not based on other results using the same model or technique, how do you believe they would have that confidence on the accuracy of their expectation?

4 days ago
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Universal Big Bang Lithium Deficit Confirmed

geogob Re:Quite accurately? (170 comments)

Correct wording would have been "Astronomers believe they can calculate quite accurately how much lithium they expect to find in the early Universe based on their experience with other elements."

or something along those lines. The second part, i'm not sure, but the "believe they" really makes the whole point.

4 days ago
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Universal Big Bang Lithium Deficit Confirmed

geogob Re:Depressing News (170 comments)

I'm sure there's two side to this story.

4 days ago
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3 Recent Flights Make Unscheduled Landings, After Disputes Over Knee Room

geogob Re:Anthropometrics (811 comments)

Shhhhhh. You're giving that Rayair guy new passenger mnagement idees!

about a week ago
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Newly Discovered Asteroid To Pass Within Geostationary Orbit Sunday

geogob Re:Can we see it? (101 comments)

You can expect a magnitude of +11.5 according to some sources. So no, definitely not visible to the naked eye. Should be easy with a good motorised telescope.

about two weeks ago
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Newly Discovered Asteroid To Pass Within Geostationary Orbit Sunday

geogob Distance discrepency (101 comments)

All other source I've seen mention 0.0002664... AU or approx. 40'000 km. That would be above geosynchronous orbit altitude, not below.

For example, from JPL:
http://ssd.jpl.nasa.gov/sbdb.c...

about two weeks ago
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How the Outdated TI-84 Plus Still Holds a Monopoly On Classrooms

geogob Re:Graphical calculator in schools (359 comments)

I'm not nostalgic. I went in university in 1999. There were no slide rules anywhere to see, I can assure you of that. But there was a lot of students quickly typing numbers on their calculator without taking a second to think if the order of magnitude even made sense.

Thing is, I doubt that a single type of calculator can be assumed as "the right one". As AC posted just before you, graphical calculator enables the resolution of complex calculus problems and can be a very powerful tool. It doesn't answer the question if it is really needed or the best for the learning process.

But back to your point, I wasn't thinking about your generation in general, but rather about engineers (and maybe physician) of your generation. Whether you consider the whole ensemble or just this particular subset, makes a huge difference. And I can assure your that engineers of your generation have a much better intuition with order of magnitudes. Sure, experience also plays a role (they are older after all), but I doubt this is the whole story. They work and think numerical problem through in a totally different way than anyone I studied with. They may also take more time to solve problems, but they mostly always get them right the first time. This is based on my professional experience and observation of a particular group of people.

about two weeks ago

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