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Comment: Re:Nothing? (Score 1) 429

by mathfeel (#48336463) Attached to: Mathematical Proof That the Universe Could Come From Nothing

there is always the question 'but what caused that'? really? there is "always" this question only if you continue to think about the world in the same mindset.

you don't have to search for an answer in the world through Newtonian glasses. "caused" implies causation. causation implies a before, and an after. first there is the cause, then there is its effects. abstract ideas like before and after are looking at the world from a point of view of LINEAR time.

if you truly study relativity

If you truly study relativity, you'll see the words "causality" and "causal" used. It's not a strictly Newtonian idea. As long as there's no faster-than-light travel, "X happens before Y" is an invariant - it's true in all reference frames.

Only if the two events are time-like separated. That is, there does not exist a frame in which they are simultaneous. If two event are space-like separated, there is one frame in which they are simultaneous. Then there is a frame in which A occurs before B and another frame in which B occurs before A. The two events cannot be causally connected.

If two events are time-like separated, (basically means their spacial separation / time separation is less than speed of light), then their order of occurrence is fixed in all frame. Because in this case, it is in principle possible for A to causally effect B since any signal emitted at event A can travel to B at no faster than the speed of light, the causal relationship between A and B is the same in all frame.

tl;dr If A can cause B in one frame, A can cause B in all frames.

Comment: Re:Tuning it out? (Score 1) 254

by mathfeel (#47303867) Attached to: The Bursting Social Media Advertising Bubble
I almost feel like I am forced to use AdBlock by bad ad. Before I install AdBlock, I said to myself, sure online ads are bad, but that's how the "free" world works. Then I noticed some website wold take forever to load, but once I clicked "STOP" on my browser, the content page showed up. I am forced to conclude that the content I want has already been loaded, but some part of the page is trying and failing to connect an ad server somewhere. I don't mind online ad, really. I tune them out. But if it starts to degrade my web browsing experience, AdBlock to the rescue.

Comment: Re:No, no it's not. (Score 2) 379

by mathfeel (#47035795) Attached to: Studies: Wildfires Worse Due To Global Warming

Thirdly, unless you've just moved to San Diego, you're quite aware of the 2003 and 2007 fires. These were (also) not the result of global warming.

I remember both of those cases well: classes are cancelled for a week, because they occurred during Fall semester in September/October. This one is in May. Having a longer fire season is exactly what the OP is stating.

Comment: Re:And the US could turn Russia into vapor (Score 1) 878

by mathfeel (#46512413) Attached to: Russian State TV Anchor: Russia Could Turn US To "Radioactive Ash"

China also won't join Russia because they don't want what Russian is proposing for Crimea, referendum for independent, become an international precedent for its many regions: Taiwan, Tibet, etc.

Why are we still in this Cold War mentality that the two formal communist countries are join at the hip. They have many diagonal interests, even during the Cold War.

Comment: Re:Messaging? (Score 1) 199

by mathfeel (#46291907) Attached to: Facebook To Buy WhatsApp
I use WhatsApp. Two reasons. One, the message seamlessly integrates with insert photos, audio, and video. Traditional SMS does not support those media well. Two, it is very popular out of the US. I have a lot of personal contacts from Taiwan, Hong Kong, and Europe. It is nice to have everyone on the same platform. I have no idea about how much international SMS costs.
Recently (last two years), I have noticed that most of the messaging activities between my contacts and I have be gradually shifting from Whatsapp to, ironically, Facebook messenger. I paid 3 years license a few years back. It looks like I will not be renewing.

Comment: Re:Which Creation? (Score 2) 665

by mathfeel (#46220941) Attached to: South Carolina Education Committee Removes Evolution From Standards

I have no problem with presenting creationism as an alternative, as long as you include ALL creation myths in the curriculum. It wouldn't be "teaching the controversy" unless you teach them all.

I mean, sure, we all really KNOW that the world began when Udu the Space Tortoise shat out the earth and His godly flatulence created the sun, but we have to let the kids decide for themselves.

I have no problem with what you are suggesting either. Just don't do it in a science classroom because none of these are science.

Comment: Re:Buy these morons a history book (Score 1) 730

by mathfeel (#45517627) Attached to: Geeks For Monarchy: The Rise of the Neoreactionaries

Please! Someone buy these idiots a history book. This is such a perfect example of people who think they're smart but they actually know jack shit about anything except pushing bits. The funny thing is, after the first arbitrary detention and execution of a dissident for "lesse majesty" or "treason against the crown" they'd all be up in arms and in jail. I really hope they're not all really this stupid and this is all just a way to get a reaction.

Just so happened that I read this today: http://en.wikipedia.org/wiki/Flexible_glass
These guys think they are smart. That if other smart people are put in charge, their ability (if they actually possesses it) would be recognized and rewarded. But if their innovation disturbs the power of elites that they are proposing to put on top, whom they think will grand them reward for innovation, they are reading history (if they have read history) wrong.

Seriously. If you imagine that you will come out on top when your competition in a job interview is a noticeably lesser-able, but probably competent, son of the CEO, you got to examine your understanding of human society.

Comment: Re:Peer review (Score 1) 707

by mathfeel (#44347207) Attached to: The Man Who Convinced Us We Needed Vitamin Supplements
In fact, because he is a member of the National Academy of Science, he could publish paper on PNAS (Proceeding of the NAS) without much peer review (or find sympathetic scientists to review his paper). In the old day, there was an honor system with respect to publishing in PNAS that the author should get their paper properly peer-reviewed. Pauling submitted a series of very shoddy vitamin studies to the PNAS and as a result, he single handedly changed this policy and now makes publishing to PNAS a lot more rigorous. http://scienceblogs.com/insolence/2009/02/18/vitamin-c-and-cancer-has-linus-pauling-b/

Comment: Intrigued... (Score 4, Insightful) 295

by mathfeel (#43766901) Attached to: Charge Your Cellphone In 20 Seconds (Eventually)
But what did she do? What is the underlying science/technology? The NBC report got nothing. Click-through to Intel's website for the competition did not immediately yield any more information, except an inspirational paragraph about her:

With the rapid adoption of portable electronics, Eesha Khare, 18, of Saratoga, California, recognized the crucial need for energy-efficient storage devices. She developed a tiny device that fits inside cell phone batteries, allowing them to fully charge within 20-30 seconds. Eesha’s invention also has potential applications for car batteries.

Will be doing some more Googling, but seriously, a link to the lab in which she worked or article/abstract published would be nice. Surely these are gifted kids, but I can't help but think the reporter really doesn't understand what she's done to write any thing more than a press release.

Comment: Re:And we don't need the man in the middle indeed. (Score 1) 555

by mathfeel (#43726385) Attached to: N. Carolina May Ban Tesla Sales To Prevent "Unfair Competition"
It is not going to stop that. But the additional work required to do that means only enthusiast (like yourself, perhaps?) will go out of his/her own way to own one. Creating sufficient friction for entrance is often enough to protect established players from competition. It also gives politicians an excuse to say: I am not against your freedom to buy a Tesla, I am just for a little more freedom for our local, lovable, car dealerships. FREEDOM!

Comment: Re:Try using maps; but other options also exist (Score 1) 561

by mathfeel (#41484999) Attached to: Why Apple Replaced iOS Maps

or get and Android Phone. That is what I am going to do.

Never underestimate what people are willing to go through (on any device) to mask the cognitive dissonant that the latest precious they just bought does not justify its price or hype. The effort people go through to justify the sunk cost, both in economy and psychology.

There are no data that cannot be plotted on a straight line if the axis are chosen correctly.

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