Define useful...I don't think that word means what you think it means.

And how many people that do use an external drive actually unplug it after the fact?

400000000 PPM should have said 400000000 PPT

Obligatory xckd
http://xkcd.com/558/

0.18 PPT vs 400 PPM
0.18 PPT vs 400000000 PPM
0.00000018 PPM vs 400 PPM

One of them is deceptive, the other 2 provide proper context. Even being 7000 times more powerful doesn't make up for 6 orders of magnitude in concentration.

Simple: you broke the law. Therefore, the insurance company doesn't have to pay out. Most policies say they are null and void if the vehicle is involved in any illegal activity.

except that you would also block other Environmental microwave and RF thereby impacting the result.

It is if you review it and become "sufficiently familiar" with the work. Ultimately the second you sign off you become responsible for the work.

This of course, depends on where the license is obtained and the work is performed.

So, like the Jaws add in Back to the Future....?

Mixing 1000 and 1024 just made my day. Well done.

And while "baud rate" is now tacitly accepted as a term, baud already includes the unit of time. Saying "baud rate" is like saying "symbols/time/time" as if the data rate is accelerating. 2400 baud is already equivalent to 2400 symbols/second. /pedant

(re-reading your post, I think you understand this but I think the distinction is important)

And they charge $0.99 for shipping

Any system will stop working when the battery dies. The point of saying POTS lasting through outages is because Telcos have to adhere (or should) to strict standards regarding availability of service and they maintain their centralized battery backup much better than a consumer does (or can).

I don't have any experience with VOIP, so I don't know how long their batteries last. However, given that people tend to use their smart phones for everything (GPS, video, audio, etc.) how much of a battery buffer is left at the end of the day to last a 24 hour outage (since power outages are generally unplanned). I know the smart phones I've used can handle a couple hours of GPS, video, audio, etc. and there usually isn't much battery left for voice or standby.

All I'm saying is that while centralization provides a single point of failure, it also provides a single point of maintenance and allows much larger battery backup than would otherwise be possible. Not to mention that it is much easier to restore power to every CO in the city to restore phone service than it is to restore power to the entire city (much like how blocks on the same grid as a fire station are usually the first to have power restored).

I hate it when people lump electrical and computer engineering together. That shows a great amount of ignorance of the breadth of studies that an electrical engineer may undertake and I actually consider it somewhat offensive.

Also:

-you included your Cisco ID at the beginning, but removed it at the end.
-a few inconsistencies regarding punctuation at the end of bullet points.

-1 Wrong.