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Comment: Re:Last time one was used? (Score 0) 54

by fuzzyfuzzyfungus (#49625837) Attached to: SpaceX Testing Passenger Escape System Tomorrow
I'd be curious to know if it actually is a bad thing to have... In the context of a rocket, there isn't exactly a lot of spare mass, spare volume, or engineers just sitting around and wallowing in boredom because the design is trivially simple and every niggling problem has been worked out.

If you skipped the launch escape system, you'd be able to transport more in the same number of launches(or the same amount in fewer) and your craft would be less complex, allowing you to focus on making the remaining systems less likely to need an escape.

Even if you don't fancy a look at our (honestly somewhat curious) level of risk aversion around space activity, it's not clear that adding an escape pod is a better investment, in terms of lives saved, than spending the resources on more extensive testing, improved reliability, and similar for the main systems. It's very much unlike the car scenario, where even 100% perfect engineering doesn't change the fact that other people are going to screw up and crash into you, and that a fair number of your drivers are going to be incompetent, drunk, or distracted; so you fairly quickly run out of improvements to the drive and steering system and have to achieve further survival gains by building in crash resistance. With a rocket, building a launch system that doesn't destroy itself and/or kill the passengers some of the time is quite challenging; but there isn't the same presence of ineradicable external danger, if your system doesn't kill the passengers, they'll survive.(Until you get them into orbit, where the micrometeorites can take them out...)

Comment: Re:Dosbox in a browser? (Score 2) 54

by fuzzyfuzzyfungus (#49623751) Attached to: Twitter Stops Users From Playing DOS Games Inside Tweets
Is there any reason to suspect that the version of dosbox compiled into javascript is more vulnerable to having programs inside punch their way out than the version of dosbox compiled for your platform of choice is?

I doubt that it is god's gift to efficiency; but it isn't obvious why dosbox would be a more permeable VM in-browser than it is on the desktop(how permeable it is, or isn't, I don't know, it probably gets less testing than the more heavily used and often publicly exposed VMs; but it is also emulating something relativley simple compared to those).

Comment: Re:queue the.. (Score 1) 250

by fuzzyfuzzyfungus (#49601135) Attached to: Long Uptime Makes Boeing 787 Lose Electrical Power
I certainly have no useful information to add to the speculation about cause; but that is what would worry me. Having to reboot a system every 284 days or less is a nuisance; but not a terribly big one(especially since the system is connected to a giant mass of moving parts governed by comparatively strict regulations concerning maintenance, so it probably gets taken to the shop fairly frequently anyway). However, if there is some value incrementing its way up that eventually causes the system to crash; I'd want to be very sure that there is absolutely nothing else that might modify that value in a way that causes it to grow faster than expected.

Comment: Re:queue the.. (Score 1) 250

by fuzzyfuzzyfungus (#49601123) Attached to: Long Uptime Makes Boeing 787 Lose Electrical Power
Cue the "If they'd chosen Windows, it would be impossible for this bug to occur" jokes...

Those have mostly been unfair since the NT-derived era; but, in the spirit of the joke, there was a bug in win95 and 98 that would cause the system to crash after 49.7 days of uptime. It remained undiscovered for years.

Comment: Re:Best of intentions (Score 4, Interesting) 225

by fuzzyfuzzyfungus (#49592763) Attached to: Grooveshark Shuts Down
Anyone with some legal experience able to clarify this? Given that grooveshark wasn't...exactly...apologetic about their strategy(nor has it changed all that much), my assumption is that the sudden shift to grovelling-apology-mode has much more to do with losing than it does with any change of heart.

Do courts give grovelling apologies enough weight that this 'contrition' is a logical strategy to try to reduce any awards of damages? Are such apologies sometimes added as conditions of a settlement, presumably so that the victor can grind the vanquished further into the dirt? Is there some other advantage to issuing one?

Comment: Re:Can't wait to get this installed in my house (Score 2) 514

by fuzzyfuzzyfungus (#49592687) Attached to: Tesla Announces Home Battery System
According to the spec sheet, the battery bank itself is a 400VDC unit and does not include an AC inverter(though a locally appropriate inverter, if not already available from a solar install or the like, would presumably be something you'd include in the project if you wished to install one). You are limited by the peak draw that the battery pack allows; but you can do absolutely whatever you feel like, subject to local codes and keeping your insurance, with the output. Unless you live in some really, really, freaky location where inverters that match your grid's flavor of power simply aren't on the market, it should be pretty trivial to spec an inverter suitable to the location.

Comment: Re:Gamechanger (Score 1) 514

by fuzzyfuzzyfungus (#49592639) Attached to: Tesla Announces Home Battery System
Also, unless you are in an area without gas service, or in a house built with 100% electric heat, winter tends to be somewhat favorable to electrical demand. Lighting requirements go up, since the days are shorter; but contemporary lighting efficiency has increased by leaps and bounds of late(and anyone buying a Tesla battery pack is probably already running LED lights, or willing to consider it); and the cold reduces air conditioning demand to effectively zero, while heating is often accomplished substantially by on-site combustion heaters, which impose negligible electrical load(typically a trickle to keep the thermostats and other regulatory electronics up; but that's peanuts compared to AC load).

An area with proper winter would make outdoor installs problematic(Li-ion is better than most; but batteries still don't do any better for being below freezing); but otherwise the situation isn't so bad. If anything, places with brutal summers are probably the harder case, since AC is absolutely voracious in its demand, and almost always electrical, and the modest increase in available solar power doesn't necessarily negate the substantial increase in cooling requirements.

Aren't you glad you're not getting all the government you pay for now?

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