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Comment: Quantum mechanics is real, like it or not. (Score 4, Insightful) 85

by Animats (#47568933) Attached to: More Quantum Strangeness: Particles Separated From Their Properties

That's a nice result. It's in accord with theory. It doesn't match human intuition based on large-scale objects, but it's the way the universe really works. The theory in this area is well understood; Feynman's "QED" has a good overview.

Ever since the double-slit experiment, it's been clear that this stuff is real. Over the last few decades, more of the weirder predictions of quantum electrodynamic theory have been confirmed experimentally. This is another predicted event confirmed. Nice work.

Comment: Re:$1000, not $300 (Score 2) 43

by Animats (#47568555) Attached to: A Look At the Firepick Delta Circuit Board Assembler (Video)

I guess you're supposed to stencil the paste in first and the put it in a heat oven as if you had done the pick and placing by hand.

Their FAQ contains:

  • TBD - Solder paste dispensing
  • TBD - Selective Reflow via custom ATC head

That's what would make the machine useful for prototyping. Printing a solder paste stencil can be done on a laser cutter, but you need access to one, or you must send the job out. Laying down solder paste by hand with a little syringe on each pad (probably under a microscope) takes longer than manually placing parts and is Not Fun.

Printing solder paste with an ink-jet printer type head has been done. If they can make that work, that will be a big win.

Comment: Firewall != Windows Firewall (Score 1) 318

You said they disabled the local firewall. That's how I'd run most Windows servers on a network of any size, because the local firewall just eats up resources on the server that could be better used for the server's actual job. The firewalls should be proper hardware firewalls built into the networking infrastructure located a) between the outside world and the client networks to control access to the network in general, b) between the POS terminal segment and the server segment to control what access the terminals have to the servers and to block the servers from unnecessary access back to the POS terminals, and c) between the two client networks you mention to control what access each client has to the other's network.

The Windows Firewall itself is fairly useless in a large network because as far as incoming connections go it can't control things any better than a hardware firewall can, and for outgoing connections it's pointless because any malware that might try making unwanted outbound connections has to be assumed to have enough access to disable or bypass the Windows Firewall.

Comment: $1000, not $300 (Score 1) 43

by Animats (#47563223) Attached to: A Look At the Firepick Delta Circuit Board Assembler (Video)

Their presentation for investors quotes a sale price of $1000, not $300. At that price they might be able to do it. How well they'll do it remains to be seen.

Their presentation is all about their XY positioning mechanism. But that's not the problem. The hard problem is dispensing solder paste reliably and precisely, sticking the component down, and using hot air to solder it into place. As with low-end 3D printers, most of the problems are where the weld/soldering action takes place. They don't say much about how that's done.

The important thing is doing a consistently good soldering job. Nobody needs a machine that produces lots of reject boards.

Comment: Should I do an ad blocker? (Score 3, Interesting) 326

by Animats (#47561759) Attached to: Which Is Better, Adblock Or Adblock Plus?

I'm behind Ad Limiter, which limits Google search ads to one per page, picking the best one based on SiteTruth ratings. You can set it for zero search ads if you like. It also puts SiteTruth ratings on Google search results. It's a demo for SiteTruth search spam filtering.

This Mozilla/Chrome add on has a general ad-blocking mechanism inside. Unlike most ad blockers, it's not based on regular expressions looking for specific HTML. It finds URLs known to lead to ads, works outward through the DOM to find the ad boundary, then deletes the ad. So it's relatively insensitive to changes in ad code, and doesn't require much maintenance. The same code processes search results from Google, Bing, Yahoo, Bleeko, DuckDuckGo, and Infoseek. (Coming soon, Yandex support, and better handling of Google ads within ads, where an ad has multiple links.)

So, if I wanted to do a better ad blocker, I could do so easily. Should I? Is another one really needed? Are the headaches of running one worth it?

Comment: Cell and battery production in same plant (Score 5, Informative) 91

by Animats (#47559917) Attached to: Tesla and Panasonic Have Reached an Agreement On the Gigafactory

The Tesla/Panasonic plan gets cell and battery production back into the same plant. The battery industry has, for a while, had a model where cells were made in one country (usually Japan, Taiwan or S. Korea, or at least with machinery from there) and assembled into device-specific battery packs near where the end device was produced (usually China or the US.) For the Chevy Volt, the cells come frm LG Chem in Korea, and the battery packs are assembled at the Brownstown, MI Battery Assembly plant.

There's no good reason to do it that way now that the era of cheap labor in China is over. As a rule of thumb, labor has to be 4x cheaper to justify offshoring. The coastal provinces in China have reached that level with respect to US/Japan wages.

Done right, this isn't labor-intensive. Brownstown has only 100 workers in a 400,000 square foot plant, and they're doing battery assembly, which is the more labor-intensive part of the operation. Tesla claims to need 6,500 employees for their 10 million square foot plant, but they're probably counting construction-phase employees.

Comment: Re:Exploited procedural loophole (Score 1) 393

by Cyberdyne (#47559675) Attached to: A 24-Year-Old Scammed Apple 42 Times In 16 Different States

The two times I've had in-store card referrals (high value transactions: the first time was buying a P3 laptop, which was quite high end in those days; the second was furnishing a new apartment after moving to Houston), I'm pretty sure it was the issuing bank ultimately handling the call - I can't imagine the bank would have transferred the personal information they were asking for as a security check to the merchant services provider: past unlisted contact details, previous transactions etc. I suspect the call may have been transferred to them, though, rather than called directly.

I had a similar issue this year with British Telecom working on a broadband fault. The service manager wanted to speak directly to the field engineer working on the fault (different divisions: the engineer's BT Openreach, the manager was BT Wholesale) - but the Openreach guy said he couldn't call the Wholesale one directly. So, the Wholesale one called my number and asked to speak to him ...

Comment: shift of blame. (Score 1) 393

by Cyberdyne (#47559595) Attached to: A 24-Year-Old Scammed Apple 42 Times In 16 Different States

it is the retailer who is supposed to make the call to the financial institution on the retailer's own phone line

To be fair, the Apple Store staff tried phoning on their own iPhones first, but none of them could figure out how to hold it to get a signal, so they had to borrow the customer's phone instead...

Comment: "Beginning of mainstream 3D printing" (Score 4, Informative) 61

by Animats (#47559309) Attached to: 3-D Printing Comes To Amazon

But this could be the beginning of mainstream 3D printing.

We heard that when Staples did it.

Amazon's 3D printed product offerings are rather lame. They're not offering any of the more advanced 3D printing processes; for that you have to go to Shapeways. All you can get from Amazon is plastic junk.

Comment: No new tools. Low-budget operation (Score 3, Informative) 61

All they're offering are some existing tools, ones you can get for free. The main ones are the Clang static analyzer and Cppcheck. They're not offering free access to some of the better, and expensive, commercial tools.

Cppcheck is basically a list of common errors, expressed as rules with regular expressions. Clang is a little more advanced, but it's still looking for a short list of local bugs. Neither will detect all, or even most, buffer overflows. They'll detect the use of "strcpy", but not a wrong size to "strncpy".

Comment: The scammer's dream. (Score 3, Insightful) 165

by Animats (#47551715) Attached to: US States Edge Toward Cryptocoin Regulation

Over half the Bitcoin exchanges have gone bust. Entire Bitcoin "stock exchanges" disappeared with the money. Bitcoin "investments" promising substantial returns each month were, of course, Ponzi schemes.

Bitcoin is a scam magnet. Irrevocable, remote, anonymous money transfers are the scammer's dream. (Yes, there are people talking about cryptographic escrow schemes so you can buy something with Bitcoins and have some recourse if it doesn't show up. So far, that hasn't reached usability.)

That's why Bitcoin needs regulation. If you're going to hold other people's money, you have to be regulated. Deal with it.

Prediction is very difficult, especially of the future. - Niels Bohr

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