Please create an account to participate in the Slashdot moderation system


Forgot your password?
Slashdot Deals: Cyber Monday Sale Extended! Courses ranging from coding to project management - all eLearning deals 20% off with coupon code "CYBERMONDAY20". ×

Comment Re:"Incorrect" MPG numbers (Score 3, Informative) 173

The make/model/package MPG figures come straight from the manufacturers, who usually don't even test production models, but pre-production engineering prototypes --engineering prototypes!-- and report that figure for as many production years as they like

According to the EPA itself: "How vehicles are tested"

Each year EPA tests a random sample of maybe 10% of the base models on the market. Note: this is a much smaller number than the various "apparent models" (variants, options packages, etc.) that a consumer might feelare different cars. Aside from perhaps testing a second engine option in a given model, the EPA ignores those variants and doesn't even require tests to be conducted in successive production years because it feels "MPG probably won't change much from year to year" and "almost no options would affect indoor dynamometer results anyway -- we know it's a poor test". Aerodynamics is just one the options that significantly impact real world MPG, but won't show up on a dynamometer

Therefore MPG numbers are just a manufacturer's own claims, subject to spot-checking by the EPA. Apparently VW, Kia, and others felt the risk of spot check was small enough to ignore.

Comment Re:Why? (Score 4, Informative) 106

SpaceX's Dragon has already launched to orbit 8 times, including 6 full resupply missions to ISS, autonomously. It rides the Falcon-9, which has successfully reached orbit 18 times.

The manned Dragon capsule configuration (aka Dragon 2) is expected to do a demo flight in about a year. It was delayed by the accident investigation due to one faulty support spar (of which thousands had already flown) in May of this year. Falcon 9 is scheduled to return to flight in about a month, but it has a backlog of missions/payload before it can fly the Dragon 2 Demo flight, currently expected in the second half of 2016.

Yeah, we temporarily stumbled on manned space flight -- but we've done so before (e.g. after the two Shuttle disasters). It's not permanent.

Comment Forget hunter/killer nanites (Score 1) 109

The (undoubtedly heroic) future efforts of EFF inter alia on this issue aside, absence of a surveilance signal will be seen as suspicious signs (just as use of cryptography is now) by certain authorities. This is a basic principle of SigInt (Signals Intelligence), also used by some crackers (go where the security is)

The budding nanoengineers among you would be better served by rigging 'nothing interesting to see here' nanites - maybe transmitting endless hours of you playing Quake. Badly.

But, honey, I'm not playing a game. I'm recording part of the house security system -- because I'd be lost, if something happened to you.

The solution of this problem is trivial and is left as an exercise for the reader.