Search found 7089 matches

by Zamfir
Sat Apr 22, 2017 6:21 am UTC
Forum: News & Articles
Topic: The Thread To Remind Me We're Living In The Future
Replies: 1494
Views: 200369

Re: The Thread To Remind Me We're Living In The Future

I don't think these concepts are intended (or suitable) as drop-in replacements for a family car, more as a taxi service. Think of the essential taxi trip - from the main airport to the centre and back. Just that kind of trip alone is already a sizable market. There are various of these projects aro...
by Zamfir
Tue Apr 18, 2017 6:27 am UTC
Forum: Science
Topic: Storing Nuclear Waste on the Moon
Replies: 57
Views: 6488

Re: Storing Nuclear Waste on the Moon

Sure, if you cut safety margins down to the standards of spaceflight, it becomes cheaper. But why bother then? Underground storage is very affordable without such compromises. An alternative scheme should meet higher standards to be worth considering, not lower. Edit: a technicality. Burn-up for nuc...
by Zamfir
Thu Apr 13, 2017 1:59 pm UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 339
Views: 28434

Re: Science-based what-if questions

No way, is that really true? Yes, and that's for ordinary silver-and-copper alloys. Apparently, there is even an alloy with 99% gold and 1% titanium that can be cold worked and annealed to reach 660MPa yield strength and 800 MPa ultimate strength. That's beyond ordinary construction steel. @morris,...
by Zamfir
Thu Apr 13, 2017 10:58 am UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 339
Views: 28434

Re: Science-based what-if questions

Yeah, but that's just trace amounts. The interesting stuff are radiation -shielding windows, those are mostly heavy metal by weight. Lead or barium, typically. I just don't know if that would work with gold.
by Zamfir
Thu Apr 13, 2017 10:29 am UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 339
Views: 28434

Re: Science-based what-if questions

Very pure gold is relatively weak, as most pure metals are. But typical jewelry gold of 22kt (90% pure) is easily as strong as standard construction steel, and steel is already overly strong for the construction of regular houses. At first approximation, we can assume that all metal structures can b...
by Zamfir
Thu Apr 13, 2017 5:40 am UTC
Forum: Science
Topic: Storing Nuclear Waste on the Moon
Replies: 57
Views: 6488

Re: Storing Nuclear Waste on the Moon

I tried to put some numbers on this. Starting point is this: http://www.neimagazine.com/features/featuredeveloping-a-spent-fuel-cask-for-air-transport-4210559 . It's a container to transport spent fuel by plane, designed to survive falls from high altitude. Add heat shielding to survive uncontrolled...
by Zamfir
Tue Apr 11, 2017 6:56 am UTC
Forum: News & Articles
Topic: Trump presidency
Replies: 3085
Views: 165769

Re: Trump presidency

Is there really anyone who thought: yes, that Trump guy is exactly the type to resist the lure of bombing?
by Zamfir
Fri Apr 07, 2017 8:19 pm UTC
Forum: News & Articles
Topic: AI discussion from The Darker Side of the News
Replies: 71
Views: 7668

Re: AI discussion from The Darker Side of the News

There's a nice poem on that exact theme (from the good old days, no less), it's long so I skipped parts Have you heard of the wonderful one-hoss shay, That was built in such a logical way It ran a hundred years to a day, And then, of a sudden, it — ah, but stay, I’ll tell you what happened without d...
by Zamfir
Fri Apr 07, 2017 6:28 pm UTC
Forum: News & Articles
Topic: AI discussion from The Darker Side of the News
Replies: 71
Views: 7668

Re: AI discussion from The Darker Side of the News

@KE, some of those brands also sell here. Whirlpool is somewhat notorious as a company that buys old brands, then sells the same cheap machine under different names to old people who remember the brand names. He mentions the same practice for the US. Makes like-to-like comparison difficult. He also ...
by Zamfir
Fri Apr 07, 2017 6:52 am UTC
Forum: News & Articles
Topic: AI discussion from The Darker Side of the News
Replies: 71
Views: 7668

Re: AI discussion from The Darker Side of the News

Large appliances were once built to last. They were serviceable and had replaceable parts for a technician to replace. However, now that automation and mass-production is so big... its cheaper to just throw away the appliance and buy a newer one. I have seen this claim, but I am not so sure that it...
by Zamfir
Thu Apr 06, 2017 7:34 pm UTC
Forum: News & Articles
Topic: AI discussion from The Darker Side of the News
Replies: 71
Views: 7668

Re: AI discussion from The Darker Side of the News

Storing (or having remote access to) detailed, regularly updated maps isn't what I'd call "augmented roads" in any sense of the phrase... carrying the "virtual augmentation in the car" is what I'd call the exact opposite of augmented roads. (I had interpreted that phrase to mean...
by Zamfir
Thu Apr 06, 2017 3:21 pm UTC
Forum: News & Articles
Topic: AI discussion from The Darker Side of the News
Replies: 71
Views: 7668

Re: AI discussion from The Darker Side of the News

Trebla, your timeline for autonomous cars is a tad off. If you look at the capability that is currently commercially available, then it's comparable to the VAMP project from the early 90s (which was very expensive state of the art at the time). Roughly speaking, a system that can drive on a highway,...
by Zamfir
Thu Apr 06, 2017 6:08 am UTC
Forum: Science
Topic: So water is blue. Why?
Replies: 10
Views: 2185

Re: So water is blue. Why?

As I explained, most people reach for the physics explanations *immediately*, when there's a simpler answer - that blue is just the color of water/air. Jumping straight to complicated explanations makes water/air look *mysterious*, Though in this case, the OP asked for this jump, in so many words: ...
by Zamfir
Thu Apr 06, 2017 5:15 am UTC
Forum: News & Articles
Topic: British EU referendum in June [update: Leave wins 52% - 48%, politics ensue]
Replies: 1100
Views: 98058

Re: British EU referendum in June [update: Leave wins 52% - 48%, politics ensue]

I'm talking about rational self-interest, which has nothing to do with optimism or naivete. If saner heads prevail, then they will negotiate in good faith. And of course, if saner heads and rational self-interest had prevailed, there would be no Brexit. Right? I assume that you disagree with that s...
by Zamfir
Wed Apr 05, 2017 12:05 pm UTC
Forum: News & Articles
Topic: British EU referendum in June [update: Leave wins 52% - 48%, politics ensue]
Replies: 1100
Views: 98058

Re: British EU referendum in June [update: Leave wins 52% - 48%, politics ensue]

Spain has been trying to get Gibraltar back for ages, it is unsurprising that they would attempt to do so with Brexit. The EU didn't demand Gibraltaras part of the Brexit, or anything like it. They said that Gibraltar would not automatically get the same trade deal as the UK, unless Spain agrees. T...
by Zamfir
Wed Apr 05, 2017 10:10 am UTC
Forum: News & Articles
Topic: AI discussion from The Darker Side of the News
Replies: 71
Views: 7668

Re: AI discussion from The Darker Side of the News

So what you're saying is that we could already have plumbing robots if more people elected to set up their plumbing in a standard way I am not sure sure about that. Even in car assembly, the robots do only some types of jobs. The more plumbing-like aspects (installing equipment and the wiring and t...
by Zamfir
Mon Apr 03, 2017 2:07 pm UTC
Forum: News & Articles
Topic: The Darker Side of the News
Replies: 2865
Views: 326895

Re: The Darker Side of the News

AI part split off to separate topic
by Zamfir
Mon Apr 03, 2017 10:35 am UTC
Forum: News & Articles
Topic: British EU referendum in June [update: Leave wins 52% - 48%, politics ensue]
Replies: 1100
Views: 98058

Re: British EU referendum in June [update: Leave wins 52% - 48%, politics ensue]

Apparently, yes. There is (already since 1981) a standard to harmonize passports. Same size, similar colour, same information on the same pages, same spelling of names (English spelling!), standards for machine-readable content. It is a nice example of the British attitude towards the EU. For someon...
by Zamfir
Thu Mar 30, 2017 4:24 pm UTC
Forum: Science
Topic: Consequences of climate change
Replies: 23
Views: 3194

Re: Consequences of climate change

The goto source for this is the ’workgroup 2' report of the IPCC. The IPCC has three workgroups, 1 for the physical climate science itself, 2 for consequences, 3 for prevention and mitigation. The workgroup 2 report( which comes out every few years) is close as you'll get to a scientific consensus o...
by Zamfir
Thu Mar 30, 2017 5:54 am UTC
Forum: Science
Topic: Storing Nuclear Waste on the Moon
Replies: 57
Views: 6488

Re: Storing Nuclear Waste on the Moon

Am I remembering incorrectly that for radioactivity to pose a significant health hazard, it has to pass at least a certain background level? And, as such, the concentration (in both space and time) of the decays is more important than their raw number? That's not a hard fact. Regulators typically u...
by Zamfir
Tue Mar 28, 2017 10:31 am UTC
Forum: News & Articles
Topic: ACA Lives For Another Year
Replies: 86
Views: 8825

Re: ACA Lives For Another Year

I have a soft spot for bounty schemes; eg. whereby doctors identify a clinical need (for a new generation of antibiotics, say) and government pays out a bounty or bonus to whoever can bring something to market first. I see this proposal pop up once in a while, but is there much real-world experienc...
by Zamfir
Thu Mar 23, 2017 6:29 pm UTC
Forum: News & Articles
Topic: The Darker Side of the News
Replies: 2865
Views: 326895

Re: The Darker Side of the News

Image

Not cheap though.
by Zamfir
Tue Mar 21, 2017 8:15 pm UTC
Forum: News & Articles
Topic: The Darker Side of the News
Replies: 2865
Views: 326895

Re: The Darker Side of the News

Also, it's about visas to attend a conference. Not about getting 50 billion dollar, wherever you got that from.
by Zamfir
Tue Mar 21, 2017 8:21 am UTC
Forum: Science
Topic: So water is blue. Why?
Replies: 10
Views: 2185

Re: So water is blue. Why?

You can find more details in the links above, but I'll give a simplified picture to start with: A passing photon only gets absorbed by a molecule, if the energy of the photon is exactly enough to shift a molecule to a higher vibration pattern. Not too much, not too little. If we want to know which f...
by Zamfir
Tue Mar 14, 2017 8:40 pm UTC
Forum: Serious Business
Topic: Breaking Up the United States
Replies: 163
Views: 13064

Re: Breaking Up the United States

A reliable vote for one of the national parties hardly points towards independence...It's a sign that people define their politics in the national context, instead of a regional context. The harbinger of breakup would be the exact opposite: you'd expect to see parties that only exist in one region, ...
by Zamfir
Tue Mar 14, 2017 9:16 am UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 339
Views: 28434

Re: Load bearing

More details needed?
by Zamfir
Sun Mar 12, 2017 5:23 pm UTC
Forum: News & Articles
Topic: The Darker Side of the News
Replies: 2865
Views: 326895

Re: The Darker Side of the News

According to our government, the story was roughly - turkey announces a public speech from a minister, without prior discussion - local government refuses, cites risks for public order - national government wants to discuss alternative location with Turkey - Turkey threatens with trade sanctions if ...
by Zamfir
Fri Mar 10, 2017 12:38 pm UTC
Forum: News & Articles
Topic: Trump presidency
Replies: 3085
Views: 165769

Re: Trump presidency

i presume the lobbying was lucrative because he had relations around a presidential candidate?
by Zamfir
Thu Mar 09, 2017 10:00 am UTC
Forum: News & Articles
Topic: Trump presidency
Replies: 3085
Views: 165769

Re: Trump presidency

One fundamental problem is that of the very concept of insurance in this day and age of data. The idea is that we don't know who will be the one (out of {large number}) that will suffer {expensive bad thing}, so we all put a little bit of money into a pool, and the unfortunate one that gets the sho...
by Zamfir
Tue Mar 07, 2017 7:49 pm UTC
Forum: News & Articles
Topic: The Darker Side of the News
Replies: 2865
Views: 326895

Re: The Darker Side of the News

if you want to discuss this, send me a PM
by Zamfir
Tue Mar 07, 2017 7:41 pm UTC
Forum: News & Articles
Topic: In other news... (humorous news items)
Replies: 13870
Views: 1816808

Re: In other news... (humorous news items)

I wouldn't call their position "difficult". The more exact term is "raking in the money faster than an industrial furnace could burn it". If there's too much child porn(or whatever) on Facebook, it's because they don't care enough to really do something about it. They could hire ...
by Zamfir
Tue Mar 07, 2017 7:20 pm UTC
Forum: News & Articles
Topic: Trump presidency
Replies: 3085
Views: 165769

Re: Trump presidency

Visa is the notorious "approves almost everything" court, right?
by Zamfir
Tue Mar 07, 2017 7:13 pm UTC
Forum: News & Articles
Topic: The Darker Side of the News
Replies: 2865
Views: 326895

Re: The Darker Side of the News

Sableagle, these wild link dumps are hard to understand by other people, and they clutter the thread. It's not the first time I tell you this. Keep your posts focused.
by Zamfir
Tue Mar 07, 2017 10:14 am UTC
Forum: News & Articles
Topic: Trump presidency
Replies: 3085
Views: 165769

Re: Trump presidency

I don't want this thread overrun with Clinton-email discussions. In this thread, you can only discuss Clinton's email server if it's a secondary point in your post, with the primary points directly related to the OT. If people would like to keep discussing Clinton's server as a main topic, please s...
by Zamfir
Mon Mar 06, 2017 3:28 pm UTC
Forum: News & Articles
Topic: Global War on Drugs has Failed
Replies: 126
Views: 21519

Re: Global War on Drugs has Failed

Coming from Singapore, I'd say sg has a more restrictive stance. Mandatory death penalty for smuggling > 15g of drugs. Can't get any worse than that. It works though, at the cost of ~130 executions a year. (Iirc Singapore's drug abuse rate is something like 4k in a population of 5 million) I though...
by Zamfir
Mon Mar 06, 2017 2:47 pm UTC
Forum: News & Articles
Topic: Anti-Semitism in Boston Suburbs Mishandled
Replies: 35
Views: 4917

Re: Anti-Semetism is Boston Suburbs Mishandled


And as a mod I say, we are going to end this discussion.

Goahead52, if you want to keep posting here, you'll have to bring a better attitude.
by Zamfir
Fri Mar 03, 2017 1:34 pm UTC
Forum: Science
Topic: Magnetic field from a permanent magnet
Replies: 1
Views: 1390

Re: Magnetic field from a permanent magnet

It's often useful to model a (uniformly magnetized) permanent magnet as a current sheet on its surface. That is, the magnetization of the magnet consists of microscopic current loops in the magnet that cancel each other out everywhere, except at the boundary of the magnet. In addition, you model the...
by Zamfir
Wed Mar 01, 2017 7:48 am UTC
Forum: News & Articles
Topic: Trump presidency
Replies: 3085
Views: 165769

Re: Trump presidency

I don't think there's any objective formula to determine normal from abnormal.

Image
by Zamfir
Mon Feb 27, 2017 9:33 am UTC
Forum: News & Articles
Topic: The Darker Side of the News
Replies: 2865
Views: 326895

Re: The Darker Side of the News

I find it amusing how marketing firms positively try to portray themselves as evil manipulative masterminds.
by Zamfir
Fri Feb 24, 2017 9:46 pm UTC
Forum: News & Articles
Topic: Trump presidency
Replies: 3085
Views: 165769

Re: Trump presidency

...with Trump's campaign many of his supporters (or at least those voting Trump to prevent a second Clinton administration) believed that Trump was all bluster, no substance, and that the other branches of government would serve as effective checks against his excesses. In this regard "fulfill...

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