Follow Slashdot blog updates by subscribing to our blog RSS feed

 



Forgot your password?
typodupeerror
×

Comment Re:Troubling signal, why? (Score 1) 471

I hadn't spotted that polar red had used the IPO amount rather than the full "value" of Facebook. I agree that Facebook users are not worth anything like the amounts quoted, though.

One thing we're ignoring is that present-day Facebook has offices and datacentres worldwide to handle their 800m users, and those would have an intrinsic value of their own. Even so, I can't see Facebook assets coming to significantly more than $1bn, never mind $10bn+.

Comment Re:avoid them thar rays! (Score 1) 811

It's my understanding the quantum energy of that radiation is related to the frequency-- and terahertz radition is pretty high up there on the reactivity scale.

In terms of energy per photon, teraherz radiation (with wavelength ~300um - microwave to far-infrared?) is far less energetic than visible light. The issue here is power at this specific freqency. The wiring of the integrated circuits in the pump is probably around the same as the radiation wavelength, so you have a reasonably well-tuned antenna receiving lots of power...

Comment Re:loss of focus (Score 2) 339

I wondered about this as well. We have a perfectly good mod/meta-mod system on traditional Slashdot that is a lot more flexible than Facebook-style "Like". Why not use it? A "+n likes" button tells you a lot less about why a comment is good or bad than "4, Informative" or "-1, Redundant", too, which you would think would be essential for SlashBI to work well.

I may be odd though, since I miss being able to mod Facebook posts Troll, Funny or Insightful, too...

Science

Submission + - James Cameron's Solo Dive to Deepest Spot on Earth (pics) (fellowgeek.com)

An anonymous reader writes: ames Cameron, director of epic films like Avatar, Titanic, The Terminator 1 and 2 and Aliens, happens to have a bit of a love affair with the ocean. So much so that he decided to make a solo dive to plume its deepest depths.

Driving his own custom submarine called the ‘DEEPSEA CHALLENGER’, Cameron descended 35,756 feet, or 6.77 miles, to the deepest discovered spot on the bottom of the ocean, known as the ‘Challenger Deep.” His dive was part of ‘DEEPSEA CHALLENGE’ (they love their capitals in oceanography, apparently), an ocean exploration initiative by National Geographic, Rolex and Cameron. His dive makes him the first person to ever make the dive solo and only the second to ever make a manned dive.

Comment Not just patents... (Score 4, Insightful) 307

So, does Gates deserve any credit for helping create the world's most valuable company?

The reality is that he probably had little choice in the matter. Not investing in Apple would risk having Microsoft as pretty much the only operating system company in existence (OS/2, Solaris and others had virtually no market share, and Linux was not really a competitor on the desktop back then). With the IE antitrust suits just starting around that time, killing off Windows' biggest competitor was a bad idea. So, you could argue that keeping Apple alive was necessary for MS, even if it might cause future problems, and those could be minimised via network effects (people needing Windows to run their applications).

Comment Re:I'm not changing to IPv6 on a specific date... (Score 1) 463

I wonder if this is part of the reason for the planned speed doubling - replacing the modems for extra speed is easier to explain to the public (via DOCSIS 3, I expect), but getting IPv6 support as a nice "side-effect".

Possibly, although beyond a bit of management work there's nothing wrong with keeping IPv4 management addresses on the network so long as they can keep the number of addresses low enough, so no particular reason to upgrade existing customers, just a reason to start deploying IPv6 kit to new customers.

It's probably as much effort to rewrite the management side to segment/double-NAT the network as it is to switch to v6. The cheaper/easier route is to just burn public address space like Comcast, but requires available space. Double-NAT for end-users would avoid that, but then you're buying new routers for CGN. At that point, there's no reason not to add v6 support while they're at it.

(My personal opinion is that we'll see a lot of dual v6/CGN deployment in the next few years, thanks to management issues and the need for v4 access.)

Comment Re:I'm not changing to IPv6 on a specific date... (Score 2) 463

For a *home network* you're correct. For the generic case of a *private network* you're wrong. I'm informed that Virgin Media are actually very interested in rolling out IPv6 because there aren't enough RFC1918 addresses for device management. I'm sure that they *could* bodge their network to make it work with the restricted number of addresses, but its probably easier in the long run to just bite the bullet and roll out IPv6 (and on a truely private network this is easier because everything is under your control).

I didn't know Virgin Media had that problem yet, but it is the reason Comcast are doing their transition work, despite ARIN having a lot less pressure on their address pool compared to RIPE. If Virgin are getting close to the limit of a /8 (modems+TV boxes+head end?), they have more incentives to start switching soon. I wonder if this is part of the reason for the planned speed doubling - replacing the modems for extra speed is easier to explain to the public (via DOCSIS 3, I expect), but getting IPv6 support as a nice "side-effect". Plus, as long as no one advertises it, there's less pressure if it doesn't work, too!

Slashdot Top Deals

Two wrights don't make a rong, they make an airplane. Or bicycles.

Working...