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Comment Not so fast (Score 1) 2

Rare Diamond Confirms That Earth's Mantle Holds an Ocean's Worth of Water (Scientific American, March 12, 2014) says:

The ringwoodite is 1.5 percent water, present not as a liquid but as hydroxide ions (oxygen and hydrogen molecules bound together).

It goes on to say

The results suggest there could be a vast store of water in the mantle transition zone, which stretches from 254 to 410 miles (410 to 660 km) deep.

It's not clear from the article if there is any actual H2O or if it's all OH-. If it's all OH-, it's not clear where the extra proton went.

Comment Re:Landline vs. cell phone (Score 1) 142

Answer: Are you there? Hello? Hello? Can you hear me? Hello?
Question: What words do you never hear on a landline?*

(* Unless the landline has received a call from a cell phone.)

Or you are a spammer calling me and I'm pretending I can't hear you.

Comment Cell vs wire/fiber-line reliability (Score 2) 142

Well-maintained wire and fiber is generally more reliable than well-maintained cellular. There's just too many things that can temporarily glitch out a radio-based system long enough to disrupt a call.

There is at least one risk that radio-based systems are much more resistant to: The fiber-seeking backhoe (North American variety depicted, Backhoe fili-comedens).

On the downside, if the only fiber in the area is the fiber feeding the cell towers, the fiber-seeking backhoes will get hungry and seek out what fiber there is, so bye-bye cell towers :).

Comment Some US states allow "no POTS" (Score 2) 142

Where I live, if you don't already have POTS available in your neighborhood, you probably never will.

Even in existing neighborhoods, you may be out of luck if you don't already have a "land line."

Also, long ago (in the DSL era), the phone companies started migrating "plain old telephone service lines with full power-back-to-the-switch" to "fiber to the neighborhood, battery-backup-in-the-neighborhood to your home over copper." This means if the neighborhood loses power, your phones may will go out several hours later instead of "never, as long as the telco switch has power or its generator has fuel."

Comment Concurrency is hard Re:Same (Score 1) 112

I think I have only ever met one fresh-from-college graduate who could solve multithreading problems

Managing concurrency correctly is fraught with pitfalls. Best to use a library that handles things like that for you.

I had only one class as an undergrad that went into the nitty-gritty of concurrent programming beyond "just use this library and don't worry about the magic behind the curtain." I don't remember if it was a required course or not.

Comment "Y does something X can't" (Score 2) 104

Doesn't mean Y is better than - or even as good as - X for most tasks that X is currently used for.

A seaplane can do something most airplanes can't: Land on and take off from water. That doesn't make it the best option for most air travel. But for some use cases, it's better than a conventional, "land and takeoff on wheels" airplane.

I expect there will be some cases where this database-based system is better than a traditional Linux kernel-based system, but I'm not seeing a compelling reason to consider this "better than Linux" overall.

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