Exactly. Whoever wrote that article didn't catch on to this. And neither did the submitter and Slashdot editors, so now we have complete nonsense on the front page. Oh, another Slasdot Monday!

Yeah, because vinyls are so robust and reliable, and the hipsters who love them just can't stand fiddling with their gear!

Yeah, I think that a smartwatch along the lines that you describe would be a plausible consumer product. For me, limited battery life would be the killer, but that might have solutions. One that I would like to see is ePaper for the display, which would also help with outdoor readability. On a watch, you could experiment with color schemes that are not your Kindle classic black text on white background. With a good designer, an ePaper smartwatch could look a lot like a Swiss fancy watch, but pack all sorts of functionality inside. (I've been convinced for years that the "bigger and fatter" trend in men's watches is a scheme designed to pave the way for wrist computers.)

I think a lot will depend on whether they can design a non-obtrusive charging method. My idea is to make a little inductive platform that you keep in your bathroom, which is the resting place for the watch as you shower. When you are done with your shower and put the watch back on, it has a guaranteed week of normal-use battery life. (Not that users would only shower once a week, but sometimes they won't shower at home and they shouldn't have to worry about watch death.)

I think you're looking at the issue wrong. There are already many second-class citizens in the world, and with depressing uniformity, they produce offspring who themselves grow up to be second class citizens. Having the option to genetically engineer traits that are highly correlated with success and satisfaction could be the very thing we need to beat this generational trap. Maybe the best way to see genetic engineering is to compare it with buying college for your children. Sure, that puts them "ahead" of some people who refuse to go, but the mere fact that college gives some people an advantage over others is surely no reason to oppose its availability. It's also a very important (though imperfect) tool for social mobility, maybe the best one we have. Genetic engineering might be many times better, especially when combined with the availability of college.

More than a decade ago when I was even poorer than now, I bought these "luxury" headphones, and though I tried to baby them, also took them everywhere. They've been accidentally dropped, sat on, slept on, stepped on, you name it. They have obvious damage, but they still sound as good as ever.

Just wait a few production cycles and the new manager will discover that coders can program AIs that do even better than experienced machinists at making designs that reduce scrap, anticipate points of failure, and shorten production lines. Once the properties of the material being used can be reliably modeled, an AI can start with input data from metallurgy, and supplement it with data mined from authorized repair shops that make accurate reports about what broke, when, where and how. That failure data will update the metallurgical models and refresh the designs. At this sort of thing (massive data integration, statistical reasoning, etc.) AIs will probably always have an advantage over humans.

The people most likely to make it through any kind of collapse are ones who can organize or join a social network that functions despite the new challenges. They would willingly watch the backs of their friends and receive the same benefit from them. They would shut up and work on the projects of the group, even if they suspected a "more optimal" strategy was available.

The first people to starve or die from infections would be the individualists who think that as soon as things get tough, they have to retreat to bunkers with their guns. People with social skills, people who are easy to like, people who are good with kids, people who evoke sympathy from others, people who are hard-working, open and jovial - they would be the ones that are in the best position to benefit from the cooperation that will become necessary when things get tough.

The way I see it, the fact that we can survive without the explicit beneficence of others is probably the biggest luxury of our age. We work for money, trade money for necessities and comforts, and this works fine even in the complete absence of exchanging favors. But this kind of lifestyle is a complete anomaly in human history. Actually, even now, the majority of the Earth's people do not live this way. This kind of informal social reciprocity is what we would need to return to. We would become tribal again. On Slashdot, people are under the illusion that the individualism of late-industrial society can somehow survive its collapse. That would be a fatal mistake. The right strategy is to give up a great deal of our autonomy for the sake of being useful to others. What you're ultimately doing after you subordinate yourself to the group will probably not involve much of what you learned in your jobs and hobbies. A lot of it will involve digging, carrying, sawing, gathering and socializing. Grit and attitude are far more valuable for these necessary things than skill and knowledge. Even complete non-experts with the right work ethic will contribute a great deal to their collective group, because of the sheer amount of extra work that will be necessary in a post-collapse society.

So finally, AMD came out with a power algorithm that reduces power consumption when the resources of the GPU aren't needed. I'm not sure where in their product line they introduced it, but it's about damn time. There are all kinds of good reasons to leave our computers on all the time, but I haven't been doing it because the idle power consumption has been needlessly high - in my case, over 50 watts. This adds up over time. Just how much power does a high-end computer need to idle, serve files, run non-demanding background processes, etc.? Millions of computers do just that, for many hours every day. A focus on reducing the power draw of these basically idling computers could make a huge difference to the world.

A very cool problem! Thank you for sharing it and helping us along with the discussion.

You're right that I ruled out the opponent voluntarily using rock, based on the informal idea that it could only make things worse, since the weakness of the opponent comes from what is already a strategy with too many rocks, which will be countered. I also ruled out ever using scissors against that rock-heavy strategy in a similarly informal way. And this makes the problem fairly easy to calculate.

So, here's something I haven't thought about yet: What is the opponent's optimal strategy on the turns where he gets to choose what he throws?

So here's what I have:

First, there is some uncertainty about what ratio of your opponent's throws will be paper. Let's call that ratio x. This means that we can define the likelyhood of his throws this way:

HeDoesRock = .5, HeDoesPaper = x, HeDoesScissors = .5 - x

Now you need to figure out the optimal winning ratio of your throwing either rock or paper.

YouWinIfRock = HeDoesScissors = (.5 - x); YouLoseIfRock = HeDoesPaper = x
YouWinIfPaper = HeDoesRock = .5; YouLoseIfPaper = HeDoesScissors = .5 - x

Winning Margin = FreqRock[(.5 - x) - x] + FreqPaper[.5 - (.5 - x)] = FreqRock(.5 - 2x) + FreqPaper(x)

Now take the first derivative of winning margin and set it to zero to find the maximum:
d/dx .5FreqRock - 2FreqRock(x) +FreqPaper(x) = -2FreqRock +FreqPaper = 0

So 2(FreqRock) = FreqPaper, so you should throw paper twice as often as you throw rock. And surprisingly, you can get this result without ever needing to know x, the optimal ratio of your opponent throwing paper. Is that right?

To figure out what you should do, first assume your opponent is rational, and will make good choices whenever he is able. Since he knows that you will play a paper-heavy strategy to counter his rock-heavy strategy, it would not be rational to voluntarily choose more rocks. That could only make things worse.

But if he tried to exploit your paper-heavy strategy by throwing scissors on turns when he gets a choice, you'd have a perfect strategy against this: All rock. On forced rock, you get a redo, and on non-forced rock, he does scissors and you win. So on first pass, I think that your opponent should favor paper when he can choose. It's not like you'll ever do scissors. That's auto-lose half the time - basically a complete surrender of your advantage. So paper is a safe move for your opponent.

The problem is that if he did 50% rock and 50% paper, then all-paper will be your perfect counter. He won't let you do that, so he'll have to throw in some scissors. Just how many? It looks now like you will both simultaneously have to determine optimal strategies in order to answer that question, and this will require derivatives of two sets of optimal-choice equations - so that you can solve for the two maxima. Sounds like a fun problem!

Good point.

I was dumb enough to follow that link, and WTF!?! You sent me anti-Semitic Nazi propaganda, totally unconnected to what I said?

If I still lived in California I would also have been "virulently opposed" to prop 8, but I hate the idea of judging someone's employability based on how they vote. To suggest that Google would treat Mozilla differently simply based on a single-issue stance of its new CEO is really selling them short. They invest in Mozilla for strategic reasons. (Mozilla isn't some sort of lazy couch-crasher that Google supports because of Mozilla's charming personality.)

And for that matter, I don't think we should judge products based on the ideology of the people who created them. To save us some time, I'll get straight to a Hitler example, noting that Hitler personally played an important role in the design of the VW Beetle. But hippies can still drive Beetles without thereby supporting Hitler.

Generation ships are pointlessly risky, heavy, expensive and tedious for the inhabitants. Accelerating a city of humans to acceptable speeds is just bad scifi. Rather than the colonists being born en route in some miserable spaceship full of stressed cooped-up people, I say it's better that they are born at their destination, in an orbiting nursery that could partially be constructed from local materials. The parenting would have to be done by AI and the gestating would happen in an artificial womb, but both of these technologies will be ready long before a suitable propulsion system is perfected. There are already independent reasons to pursue both parenting/tutoring AI and artificial wombs for terrestrial applications, and I expect that both systems will be usable in the lifetimes of some of today's slashdotters. Children being raised by AI is potentially controversial, but before long, AIs will be better at parenting than the many millions of bad human parents in the world today, who still get to keep their kids. And it will keep improving, even if human parents don't.

The worries about genetic diversity are just stupid. We could easily just bring along frozen fertilized eggs, which will remain viable with proper shielding for even a century-long trip. These could be gestated by the early generations of colonists, or by the artificial wombs that they brought along. But I would think they'd serve as a backup. Much less cumbersome would be to simply transmit some suitable DNA sequences from Earth once the colony ship arrives, and print it to DNA using Venter technology that we basically already have. The process is less likely than freezing to introduce errors. The privilege of instantiating your DNA in another solar system could be a reward for super-awesome human beings that do cool stuff in the decades that the ship is en route - a kind of Nobel Prize for being a worthwhile person.

The point of any stellar colony ship is to travel light - as light as possible. That means bringing 3D printers that could use materials at the destination to make the stuff that the colony will need: initially, a space station and its facilities. If this payload is light enough - just tools that are able to make the necessary tools on site - then conventional nuclear propulsion might be enough to accelerate the ship to an acceptable speed, and we'd be ready to launch in a mere 150 years. In comparison, a cumbersome ship that hosts a city of 40,000 people, plus all the farms they will need to stay alive for a century, plus all the facilities they will need to keep from going insane, will launch ... never. Because it's a stupid, stupid idea.