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Comment: Re:Fine. Legislate for externalities. (Score 3, Insightful) 450

by JanneM (#48024761) Attached to: Energy Utilities Trying To Stifle Growth of Solar Power

"Indeed, in Japan, only the western half of Honshu, Shikoku and Kyushu have enough sunny days to justify large-scale rooftop solar installations."

Which is why one of the largest solar plants opened near Sendai in northern Honshu a couple years back? What conditions are profitable depend on the technology you use, and the cost of production. And as solar cost decreases and efficiency increases more locations will be realistic.

Comment: Re:Why didn't they seek protection? (Score 4, Informative) 41

by JanneM (#48009265) Attached to: Japan's Mt. Ontake Erupts, Stranding Hundreds of Hikers

The video is deceiving; that trail is much steeper than it looks. Slowly stumbling downwards is pretty much all they could do. Also, most deaths from eruptions are either from poisonous gas or from heat. A small hut will shield you from neither. But both gas concentration and heat will disspiate by distance, so simply trying to get away from it may well be your best chance to survive.

Comment: Re:Copter data (Score 1) 91

by JanneM (#48003439) Attached to: DHL Goes Live With 'Parcelcopter' Drone Delivery Service

So why are people generally using quadcopters for autonomous systems? What's the disadvantage of a single-rotor copter when you're doing autonomous flight? I can imagine that perhaps it's a size issue - quadcopters are lighter or cheaper or more efficient below a certain size or when indoors? Or is it much more difficult to write a reliable control system for a single-rotor system?

Comment: Copter data (Score 5, Insightful) 91

by JanneM (#48001821) Attached to: DHL Goes Live With 'Parcelcopter' Drone Delivery Service

Here's some data on the hardware, from

* 65 km/h peak speed, and will cover the distance in about 15-30 minutes;
* It weighs 5kg, and can carry a payload of up to 1.2kg

With 1.2kg it can certainly carry a complement of medicines or even small, urgently needed hardware and parts (batteries or spare bits for medical equipment for instance). Not general use of cours, but it does look like more than just a stunt.

Comment: Debian GNOME needs some attention (Score 3, Interesting) 394

by Bruce Perens (#47979731) Attached to: Debian Switching Back To GNOME As the Default Desktop

After something like 20 years I finally found a system that won't run Debian unstable right now. My Panasonic Toughpad FZ-G1 magnesium tablet + iKey Jumpseat magnesium keyboard. Systemd and GDM break. Bought (for less than full price) because I am a frequent traveler and speaker and really do need something you can drop from 6 feet and pour coffee over have it keep working.

But because of this bug I have ubuntu at the moment, and am not having fun and am eager to return to Debian.

Comment: Re:The review ecosystem is good and truly broken.. (Score 2) 249

by JanneM (#47963597) Attached to: Small Restaurant Out-Maneuvers Yelp In Reviews War

Why? Maybe I simply only review things I like. Why would that devalue my reviews?

This. One reason really low and really high reviews are much more common than they ought to be is that people only bother voicing an opinion if they feel strongly (positive or negative) about something. Another is that once they do, they'll tend to exaggerate their evaluation to really drive home how they feel.

My suspicion is that the only stable scale is a simple "really liked it/really disliked it" up/down system. Then somehow weigh that according to the proportion of customers or buyers that actually bother to review. That depends of having a decently good estimate of that proportion though. The likes of Amazon have that for their products; for restaurants it'd be hard to impossible,

Comment: What is really happening here? (Score 1) 974

by Bruce Perens (#47930483) Attached to: ISIS Bans Math and Social Studies For Children
We are in a War on Faith, because Faith justifies anything and ISIS takes it to extremes. But in the end they are just a bigger version of Christian-dominated school boards that mess with the teaching of Evolution, or Mormon sponsors of anti-gay-marriage measures, or my Hebrew school teacher, an adult who slapped me as a 12-year-old for some unremembered offense against his faith.

1 Mole = 25 Cagey Bees