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Comment Re:But where are the potentional profits? (Score 1) 116

Water is one of a large class of substances that we would like to find in space for local use, rather than to send back. Any mining materials return operation will want to minimize human presence, but for maintainability that presence cannot be zero. Hence the need for life-maintaining consumables.

I think you have missed the point of my second paragraph, "If you want to justify space exploration on economics, then you must accept that economics will set the schedule." In economic arguments, you cannot simply treat imagined future needs as if they were actual current needs.

A lot of space boosterism displays confusion over the proper use of the present and future tenses.

Comment Re:But where are the potentional profits? (Score 1) 116

The folks from Deep Space Industries are hoping to sell their asteroid water for 1/1000th its current value. I question the intelligence of anyone that describes such a dramatic decrease in cost as "pricey".

Good, then the prof. is right - there's no point in the government spending money on developing technology that private enterprise can so easily and profitably create.

Comment Re:But where are the potentional profits? (Score 1) 116

Water on Earth is cheap and plentiful

Water in Earth orbit on the other hand is neither.

Water on on earth is needed, and in large quantities. Water in orbit is currently only being used by a few nations' vanity projects.

If you want to justify space exploration on economics, then you must accept that economics will set the schedule.

Submission + - Yosemite Wi-Fi Problems

Capt.Albatross writes: Sophos' Naked Security blog is reporting that some users of Apple's OSX 10.10 (Yosemite) operating system are having problems with wi-fi: "Your network works fine for a while, typically between about 30 seconds and five minutes, and then fairly abruptly begins to suffer almost total traffic loss. The network shows up as active, and low-level packets such as PINGs can be sent and received as normal. But traffic such as UDP and TCP just doesn't get through."

Apple's own Support Community has much discussion, and some proposed workarounds, but no definite explanation or solution appears to have emerged yet.

Submission + - High speed evolution (sciencedaily.com)

Taco Cowboy writes: Normally the 'evolution conjures up an image of "super-long time frame" but at least in the case of lizards on Florida islands the evolution seems to have shifted to the fifth gear

Sientists working on islands in Florida have documented the rapid evolution of a native lizard species — in as little as 15 years — as a result of pressure from an invading lizard species, introduced from Cuba. After contact with the invasive species, the native lizards began perching higher in trees, and, generation after generation, their feet evolved to become better at gripping the thinner, smoother branches found higher up

The change occurred at an astonishing pace: Within a few months, native lizards had begun shifting to higher perches, and over the course of 15 years and 20 generations, their toe pads had become larger, with more sticky scales on their feet. "We did predict that we'd see a change, but the degree and quickness with which they evolved was surprising," said Yoel Stuart, a postdoctoral researcher in the Department of Integrative Biology at The University of Texas at Austin and lead author of the study

"To put this shift in perspective, if human height were evolving as fast as these lizards' toes, the height of an average American man would increase from about 5 foot 9 inches today to about 6 foot 4 inches within 20 generations — an increase that would make the average U.S. male the height of an NBA shooting guard," said Stuart. "Although humans live longer than lizards, this rate of change would still be rapid in evolutionary terms"

This latest study is one of only a few well-documented examples of what evolutionary biologists call "character displacement," in which similar species competing with each other evolve differences to take advantage of different ecological niches. A classic example comes from the finches studied by Charles Darwin. Two species of finch in the Galápagos Islands diverged in beak shape as they adapted to different food sources. The researchers speculate that the competition between brown and green anoles for the same food and space may be driving the adaptations of the green anoles. Stuart also noted that the adults of both species are known to eat the hatchlings of the other species

"So it may be that if you're a hatchling, you need to move up into the trees quickly or you'll get eaten," said Stuart. "Maybe if you have bigger toe pads, you'll do that better than if you don't"

Comment Re:Would this kind of system have saved Challenger (Score 1) 44

Thanks for your informative post. In addition, there is an issue that I was unaware of until I read it in the original article here: "...Challenger's external fuel tank disintegrated, throwing the orbiter into the local airflow at forces way above design tolerances. It ripped apart, claiming the lives of seven astronauts."

Implying that even if Challenger could have been separated cleanly and undamaged from the exploding tank, it would not have survived. A stronger, and therefore heavier or smaller orbiter, does not seem to be feasible, given the extent to which the shuttle design was already stretching the envelope.

That's why we are back to capsules, I guess.

Comment Solved Problem (Score 1) 87

"We are trying to identify the technologies that can help human workers minimize their contact with Ebola." said Taskin Padir, an assistant professor of robotics engineering at Worcester Polytechnic Institute.

That technology exists: protective clothing, properly used, and sanitary waste disposal. If you can't get that, you won't be able to get robots. If you have it but cannot organize its correct use, there is an effective solution, but it doesn't involve robotics.

Comment Re:There is no "working AI" at this time (Score 1) 98

This new definition of AI is several steps down from what Minski, McCarthy and company were aiming for. While this work is the direct descendent of theirs, and is often significant and sometimes impressive in its own right, there is an odor of self-congratulatory aggrandizement about the current usage.

In which case, there must have been an "odor of self-congratulatory aggrandizement" about Minsky (I haven't studied AI in general since 1998, but at least I know how to spell his name) because the guys working on it now are a lot nearer to what he was aiming for when he started out.

Only if he claims to have achieved those original goals.

Comment Re:There is no "working AI" at this time (Score 1) 98

This new definition of AI is several steps down from what Minski, McCarthy and company were aiming for. While this work is the direct descendent of theirs, and is often significant and sometimes impressive in its own right, there is an odor of self-congratulatory aggrandizement about the current usage.

Comment Warmth == Trustworthiness? (Score 1) 460

All the results presented in the linked article show measures of perceived warmth, not trustworthiness. The author of the article clearly thinks a measure of warmth is also a measure of trustworthiness, but makes no attempt to justify making that highly dubious association, nor states whether she got it from the researcher (given the tone of the article and the title of the paper, I suspect she did.)

Comment Re:Science creates understanding of a real world. (Score 1) 770

A request for information is hardly a form of denial. You can continue to reply with snotty childish retorts or you can help educate those who would like to know more.

To anyone with a mature theory of mind, your position is clearly intended to indicate doubt, and your claim of open-minded curiosity is a pretense, as is made obvious by your self-confessed lack of effort to correct your ignorance, and your bogus dismissal of valid sources. You are apparently not only a denier, but a passive-aggressive one.

Comment Re:Science creates understanding of a real world. (Score 1) 770

True as that may be, people who are absolutely nuts tend to use the perpetual openness of science as an excuse to inject irrelevant, arbitrary insanity into discussions of fact.

You seem to be missing the point of TFA. Science doesn't need you to discuss it - it stands on it's own. If you have to discuss/debate it you have moved well out of the realm of science and into politics. There is no exception to that and frankly it's disgusting you claim affinity for scientific knowledge and understanding and can't grasp such a basic concept.

You seem to be confusing science with religion - that is where you find the 'truth' written down once and for all. Where do you think science comes from? A bible-like collection of textbooks? In reality, science starts in uncertainty and reaches a consensus only if and only if the evidence is strong. In the case of global warming, that is what has happened.

Comment Re:Science creates understanding of a real world. (Score 1) 770

I've never considered myself a "denier", and yet every time I ask someone to point to the evidence, I hear that slur tossed out. I've only briefly attempted to search for evidence online, and had virtually no success except to find things like the 97% consensus page at NASA's site. So, if anyone here has better sources, I'm all "ears".

So by your own admission, you either haven't tried very hard to inform yourself, or you are too prejudiced to accept valid information. The latter certainly counts as denial. The former - claiming that there is little evidence on the basis of only "briefly attempt[ing] to search for evidence online" - is also a form of denial.

Submission + - Death Valley's Sailing Stones Caught in the Act (livescience.com)

Capt.Albatross writes: The flat surface of the Racetrack Playa in Death Valley is littered with rocks, some weighing hundreds of kilograms, each at the end of a track indicating that it has somehow slid across the surface. The mechanism behind this has been the subject of much speculation but little evidence, until a trio of scientists caught them in action with cameras and GPS.

Comment Re:Statistics as standalone field (Score 1) 115

As a result [a] pure statistician is not very useful - generic analysis can be performed by software, in-depth analysis requires specific knowledge.

In-depth analysis requires a real understanding of statistics as well as of the domain. CS knowledge, at least as commonly taught, is not a substitute for for the statistics requirement.

This is not unlike complaining that assembly coding is dying. Well, yes, we now have less need to code everything that way because we have better tools.

This is not a valid analogy. HLLs automated some of the rote, mechanical aspects of implementing algorithms. They do not automate away the need for a higher-level understanding of what you are doing.

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