What a lot of these articles forget is the current requirements to charge something fast. Just because something can be charged fast doesn't mean you can do it.

Let's take a typical laptop battery of 70 watt hours. To charge it in one hour, you need a 70W power supply (more or less). Now let's charge that same battery - if we can - in 30 seconds, or 120th of the time. You'll need an 8.4kW charger to do that, which is going to be much larger and heavier than the laptop. In Britain where the mains electricity is 240 volts, you're going to need 35 amps to do that (typical household circuit is 13 amps, high power circuits for example ovens and tumble dryers are 30A). In the United States you'll need 70 amps.

OK, so you can charge slower (but still much faster than a conventional battery) but it's still going to require a large (heavy) power supply for your laptop if you want to make the charging speed significantly faster than current lithium ion batteries. You're either going to wind up lugging around a lot of extra weight with your portable machine, or you're going to need two chargers (more expense). The thing is, the times when you really wish you can charge a battery quickly are always times you're travelling and so won't have the large heavy charger with you!

Is there a link to some article not in the mainstream media? The article has no details at all. Did she use an off-the-shelf super capacitor? What circuits did she make (one characteristic of a capacitor is the voltage immediately goes down as soon as you take charge from it, unlike a Li-Ion battery which maintains a more or less constant voltage through most of its charge), and how efficient is the voltage regulation? What about the energy density of the device? All supercaps I know of have a very small fraction of the energy density of a lithium ion battery. To replace a Li-Ion you need similar energy density or you get a massive phone.

Recently at work we had a visitor from Tristan da Cunha (basically, our visitor was the Tristan da Cunha post office). If you don't know, Tristan is a British island in the south Atlantic. It has no airport and no scheduled boat service and a population of around 250. The nearest other inhabited place is South Africa, about 1600 miles away. To get there, you flag down a passing fishing boat and the journey is typically at least 2 weeks.

They get one mail delivery (which also hitches on a fishing boat) once every 6 weeks or so. They get a lot of misdelivered mail for Trinidad and Tobago. That mail when it gets returned for redelivery then has to take the 2 week journey back to South Africa and may have been delayed for 9 or 10 weeks by the time it gets to its proper destination.

When the mail arrives at Tristan, it's sorted by family at the post office but not actually delivered on from there - the post office rings a big gong and everyone comes to get their mail.

Well, better driver training probably has a bigger impact. The yellow phase in the UK is probably half what it is in Florida, yet the accident rate in the UK is well under half of what it is in the US despite the UK having a far greater population density and busier roads than Florida. What I've noticed in Florida is for traffic signals, green means go, yellow means go faster and red means the next six vehicles may pass through the intersection.

Drivers here are taught to observe well ahead, and also that if you see a signal ahead that's been green for a long time, anticipate that it may change very soon.

If you don't live in the US, just don't pay the fine.

Since when was Blizzard a French company? It never has been. Blizzard started out as Silicon and Synapse and is based in Irvine, California.

If the code for this thing is written in C, you can now really shoot yourself in the foot (very accurately) :-) http://m5p.com/~pravn/foot.html

Where has this plague of saying "reach out to" come from when people mean "speak to" or "contact"? It gives the impression of some kind of emo touching session.

You obviously have never driven in Houston.

But one of the least safe amongst developed countries. The US has a worse rate than Italy, and Italian drivers have one hell of a reputation for being bad. It's also worse than Spain which has a similar reputation to Italy, and double the accident rate per 100k cars than the UK and Germany (which has autobahns without speed limits).

It's entirely probable. There are already way more radio controlled models than this number in the US. Many drones are really just standard radio controlled models with a few extra bits added (for instance on one "Police will be using this drone" article on TV, it was quite clearly just a 600 class electric RC helicopter - airframe cost of about $300, probably total build cost for RC use around $900 with top of the range gear - with some extra stuff on it). Given the low potential cost of many things that will count as a drone, 30000 might be a low estimate.

But it's unpleasant and wastes a lot of time. If we were in a world where the price stuck to the windscreen was the price you paid and that was that, you could google the fair price and compare prices at several car lots without having to talk to a salesweasel. The haggling model means if I want to compare prices at several dealers it is a slow and highly unpleasant process.

There is a sweet spot (with that argument, we could say why not use 2.4). The thing is Debian is fantastic for certain things, such as servers or development workstaitons - things where you want to have something very dependable that's going to be solid. And Debian is solid, and their conservative approach means we run it on all our Linux servers.

It would have resulted in a *proportional* punishment. As a teenager I improvised something far more spectacular and got caught (it was kind of obvious who did it - enormous bang followed by four teenagers running away from the sound source just as a teacher left the chemistry block). I was shouted at and IIRC got a detention for it. No suspension. No life-ruining felony prosecution.

What this girl is getting is grossly and obscenely disproportionate. Even if she's acquitted of felony charges, it is grossly unjust that she was ever dragged through the court system for this.

A bit OT, but how are you supposed to pronounce Coursera? Course Ra or Cours Era?