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Comment Re:Email is like sending a postcard (Score 1) 218

Except the USPS scans an image of every piece of mail that it processes, which is then stored in a database that law enforcement can access. So in effect, sending a postcard is very similar to an email, with regards to how the message is intercepted and stored by federal authorities.

My experience working for the USPS was that the images were kept for a very short time (a day or two max) and then deleted. It is possible that law enforcement would be able to get a copy, but they'd have to be quick. In addition, the Postal Inspection Service is pretty serious about postal employees not accessing the mail except as part of doing their jobs, but I don't know whether they give access to law enforcement.

Comment Re:Email is like sending a postcard (Score 1) 218

On the other hand I think we would be justifiably irate if it turned out that the Post Office was photographing every single postcard and processing the information it contained into a permanent database.

Except that it turns out that the Post Office is actually doing that. It is photographing EVERY piece of mail and processing the information and putting it into a database. I did not examine the articles closely enough to be sure, so I do not know if that includes evaluating what is written on postcards. I suspect not, but I also suspect that the information contained in the article would not have answered the question of whether they do or not.

Postcards are *supposed* to have a designated address area, and a designated text area. That being said, people write all over the whole thing. It can lead to some mis-sorted mail if the address recognition software happens to recognize some of the text instead of the address. The post office does indeed collect images of the front (address side) of all mail, that's how it gets sorted. (OCR, and if the computer can't read it, it goes to a graphical display for a human being to decipher).

Comment Re:Our culture (Score 1) 1029

In all fairness this is one you can't blame on our culture. Blockbuster movies need to be international. International means they can't have as much culture. Pure action translates well to large audiences worldwide, the more plot the more character the worse it translates.

This one you can blame the 3rd world.

Movies need more action? Reminds me of http://xkcd.com/311

Comment Re:Too Few (Score 1) 300

As far as I can tell, the whole poll is off by an order of magnitude :).

I'd have to have some kind of plugin to tell me how many tabs I have open.

I had a similar issue. I saved all tabs as a bookmarks folder, then opened the folder and saw the number of items.

Comment Re:Spectrum? (Score 5, Informative) 128

I do not know what is the limit of the "wireless spectrum" if there is any. Before this limit is reached, I guess just updating all hardware gears that transmit/route more efficiently is all that is needed.

The limit is given precisely by Shannon's Law, which gives a mathematical limit on the amount of data that can be sent over a given amount of bandwidth. Spectral Efficiency is the amount of bandwidth available in a given wireless spectrum.

Comment Re:I use it for linux distributions (Score 1) 302

How would you use broadcast or multicast to distribute an OS? Call me ignorant, but how would you do that in practice?

I used to work in a computer lab at the university I went to. We used Ghost to do exactly that. All the computers in the lab (a few hundred PCs) were booted up off a special floppy (or later, cd) that started up Ghost in listen mode. Then, the central server used multicast to send the OS image to all the clients at once. It took less than an hour, and that was with 100Mb/s Ethernet.

Comment Re:I use it for linux distributions (Score 1) 302

Here's a question:
To know which bits have changed, doesn't it need to compare the two files. How does this result in bandwidth savings?

No, because it only sends a hash of the data. The other side computes a hash of it's data, and if the hashes match, the transfer is complete. If The hashes don't match, there is a rolling hash that can verify a partial match, and send only the changed data. There's more info here

Comment Re:Can laser printing create nano-size circuits ? (Score 1) 83

"For example, the latest Intel's microchip, the Ivy Bridge (and soon the Haswell) have circuit-sizes as small as 22nm"

I'll bet on the traces being even smaller than that. You must mean transistor size.

It means feature size. A feature can be part of a transistor, or a circuit trace, or a bunch of other things.

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