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The Dominant Life Form In the Cosmos Is Probably Superintelligent Robots

leonardluen Re:von Neumann probes (312 comments)

this planet is overrun with microorganisms, everywhere we look, how do we know were aren't the von neumann probes?

we are self replicating, bacterial spores can survive extremely long periods in a vacuum so it stands to reason they could planet hop and there are some theories life here might have come here from mars anyway.

maybe we just can't see the forest for the trees.

9 hours ago
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The Dominant Life Form In the Cosmos Is Probably Superintelligent Robots

leonardluen Re:they really are talking, we just can't hear (312 comments)

or they realized that radio waves are too easy to intercept and eavesdrop on so moved on to something else that is more secure.

9 hours ago
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Hackers' Shutdown of 'The Interview' Confirms Coding Is a Superpower

leonardluen Re:Huh? (207 comments)

The people who use malware are script kiddies.

i thought the people that use malware were called our relatives, whom then call us to fix their computers...

10 hours ago
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To Fight Currency Mismatches, Steam Adding Region Locking to PC Games

leonardluen Re:toad (154 comments)

and you can buy a simulation of this on steam!

yesterday
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Keurig 2.0 Genuine K-Cup Spoofing Vulnerability

leonardluen Re:But does it report artificially low ink levels? (270 comments)

from your description it sounds like Keurig has always been DRM'd. their previous form was the patent, but since that expired they had to go with an electronic form.

about a week ago
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Hawking Warns Strong AI Could Threaten Humanity

leonardluen Re:Assumptions define the conclusion (574 comments)

a) there is no upper limit on intelligence.

There is no limit until the intelligence has co-opted all material in the visible universe to perform calculations and further its own intelligence. granted such an intelligence would be working on an entirely different timescale than our own.

b) Since the AI is smarter than us, this means it can design a smarter version of itself.

i grant you this is a pretty big assumption considering we haven't yet made an true AI to begin with.

c) The AI has a "desire" to create a better version of itself

it is probably safe to assume this is will be an innate desire of any true AI that we create, because one of our own reasons that we desire to create AI is for it to be able to adapt itself and to learn and react better to whatever task we have assigned to it.

d) The AI doesn't have the foresight to see that the "better" versions would eventually replace the original AI as well as humans.

you are assuming the AI would care if it is replaced by a better version of itself. or that it wouldn't be more of an upgrade of the existing one than a replacement.

about two weeks ago
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Hawking Warns Strong AI Could Threaten Humanity

leonardluen Re:So What (574 comments)

or it would do like the rest of the world and outsource the manufacturing to Chinese laborers because it is cheaper.

about two weeks ago
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Hawking Warns Strong AI Could Threaten Humanity

leonardluen Re:So What (574 comments)

Or the AI could decide it needs a hobby and take up trading stocks

about two weeks ago
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Halting Problem Proves That Lethal Robots Cannot Correctly Decide To Kill Humans

leonardluen Re:Quantum Mechanics and Determinism (335 comments)

A large number of quantum particles seem to act in a deterministic way but this is simple the law of large numbers.

it should be pointed out that our computers are built on this system as well, not just our brains.

if the universe is not deterministic then how can our computers be?

about 1 month ago
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Flight Attendants Want Stricter Gadget Rules Reinstated

leonardluen Re:We're ignoring them... (406 comments)

i was wondering that myself.

the wikipedia article on water landing lists about 30 commercial airplanes that either had to ditch or in some other way ended up in the water.

at least 2 of the planes didn't have any floatation devices at all.
and apparently this flight is what started all the safety demonstrations for over-water flights. because a bunch of passengers died after they panicked and refused to leave the plane after it had to ditch in the ocean ocean..

They feared the rough seas and the possibility of sharks and had refused to leave the sinking aircraft to board life rafts

though i don't really see how safety training would have made much of a difference for that, as i don't recall it normally covering rough seas or sharks.

about 2 months ago
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The Physics of Space Battles

leonardluen Re: Umm no (470 comments)

apparently the bigger threat to the A10 was flame-out of the engines due to the exhaust from the gun depriving them of oxygen. This had happened while in testing and so they had to add internal igniters to the engine that fire when the gun is fired to keep the engines burning.

so the idea is you send the platform towards the target from long distance to keep yourself safe. it is primarily un-powered and just coasting so the enemy can't detect additional heat or radiation from your thrusters to give away that the platform is coming. when it gets close it swivels with the gyros to correct any aim towards the target, which may have moved since you sent the platform, but hopefully now you are much closer to the target, and they have much less time to react. It then fires its gun. if the target is directly in front of you, then using your math you get a good about 1k shots off before you stop relative to the target. however even after that the velocity of your rounds are still sufficient to cause damage, and maybe you can fire an additional 500 rounds that are still lethal. the last of which would be traveling around 500m/s towards the target, of course this is all ignoring the loss of weight due to the ammo being fired

even if the target is directly to your side relative to your direction of movement you can probably get a good 500 shots off towards it at potentially lethal velocity. if on the other hand you have passed the target before you fire, then it is too late and there is possibly no point in firing as your rounds would not reach the target. so you just need to make sure you fire before this.

about 3 months ago
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The Physics of Space Battles

leonardluen Re: Umm no (470 comments)

oops, i guess i missed this part "but the complete weapon, with feed system and drum, weighs 4,029 pounds (1,828 kg)"

so the platform would might have to be up to 5k to 6k kg, which is around the size of a geostationary communication satellite.
but would then allow us to fire off 7k to 9k rounds before we stop the platform. the GAU-8 fires at 3900rpm, so this is only a 2 to 3 second burst.

about 3 months ago
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The Physics of Space Battles

leonardluen Re: Umm no (470 comments)

the GAU-8 fires a 0.69 kg round at a muzzle velocity of 990 m/s, the gun itself weighs 280kg we will use that as a starting point. according to a random website a "medium sized satellite" would be around 1000kg so lets use that for an estimate to the size of our entire thing to include electronics and such. so if my math is right each round fired would add about 0.683m/s of backwards velocity to the platform. say the platform was traveling towards the target at around 1000 m/s in the begining then you could fire off around 1500 rounds before the platform comes to a dead stop relative to the target. and the first rounds you fired would be traveling nearly 2k m/s towards the target.

Clearly the only way to resolve this argument would be for the USAF to let us borrow an A10 and fire the gun! not entirely sure what it would prove, but it would be fun.

.

about 3 months ago
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The Physics of Space Battles

leonardluen Re: Umm no (470 comments)

what is your point? if you have gyros to control orientation and aim you probably have computers and some sensors to aim. the gun platform is now much closer to the target than the original ship from where you had launched it, so it should also be much easier to hit the target now. the target will also have less time to react to the projectile and move out of the way now.

but to fire projectiles at a moving target you have to fire ahead of it so the projectiles and the target meet.

this is already a solved problem. we already do it on earth with patriot missile system. and some of the targets they take down are moving faster than they do.

the amount of thrust used to fire the projectiles that way will push your gun and whatever it's mounted to, backward with the exact same force.

umm...so you mean just like you see in the movies where the guy shooting the gun gets thrown across the room, just like the guy he shot at?

the gun platform will already have velocity towards the target. all it is doing is getting in closer to the intended target, correcting the aim, and then shooting a projectile smaller than itself. (bonus points if the platform itself also hits the target, but this isn't needed). yes there will be some kickback when you fire, but it doesn't necessarily matter since you don't care if the platform itself hits. you already have velocity towards the target any more you can add to the projectile is a bonus. in addition you could either add extra mass to the platform to help counteract this kick, or add rockets to it that fire off just before you fire the projectile so that you can impart the most velocity possible into the projectile towards the target.

and actually it might be good to calculate the charge so that once the projectile is fired, it takes all forward momentum away from the gun platform relative to the target and parks it right in front of the enemy, just being a nuisance in their way. though you would probably want to fry the electronics so they can't easily reload it and send it back.

about 3 months ago
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The Physics of Space Battles

leonardluen Re: Umm no (470 comments)

i would imagine the "missile" would contain gyroscopes so it can change orientation without using thrusters. For bonus points you could even make it look like a natural meteoroid, then when it gets close to its target it, it uses the gyroscopes to aim towards the target and can fire off a bunch of smaller projectiles designed to pierce the target's hull.

the radiation from thrusters is what is most likely to give you away, so this eliminates them entirely.

about 3 months ago
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Ask Slashdot: How To Keep Students' Passwords Secure?

leonardluen Re:OpenID (191 comments)

oops nevermind, guess i need my eyes checked. thought you had said take away their slashdot accounts.

about 3 months ago
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Ask Slashdot: How To Keep Students' Passwords Secure?

leonardluen Re:OpenID (191 comments)

That is just harsh, they will be mocked mercilessly when they have an 8 digit slashdot ID because you didn't let them signup for slashdot.

about 3 months ago
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Sci-fi Predictions, True and False (Video 1)

leonardluen Re:Star Trek Communicators (139 comments)

Seems the better edict would have been to have everyone change the color of their shirt.

"Hey these red shirts seem to anger aliens and make people clumsy, so lets start wearing green shirts instead!"

about 3 months ago
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Unpopular Programming Languages That Are Still Lucrative

leonardluen Re:In Theory (387 comments)

I don't know.

many Access project start like yours but then the business outgrows it, but then by the time you realize that you are then stuck with Access and have nowhere to go as it is doing all of your business logic and has turned into a monster.

  we originally moved everything to PHP and MYSQL, but have since converted most things to Java and MSSQL, with a little bit of C# here or there.

Our path probably isn't too helpful to you. i work for a university primarily developing internal applications. The majority of our decisions on what platforms to use are made based on what our slave labor (students workers) are capable of doing, so this is probably not necessarily what would work best for most businesses. The students may be cheap but they have extremely high turnover, as we can't keep them after they graduate. To be fair we do pay them and this is one of the highest paid student jobs available on campus. we have a short time to train them and get them productive before they leave, we have to work around their class schedules during the school year so we only get them part time, and considering they are still taking their CS classes they often know little to nothing when we get them. considering those limitations, i think we do quite well and the students that work for us get some valuable work experience that has helped them start their career after graduation.

about 3 months ago
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Unpopular Programming Languages That Are Still Lucrative

leonardluen Re:In Theory (387 comments)

I used to do Foxpro, it at least paid for my education. i would still pick it over MS Access on most days. we long ago converted everything out of foxpro and had never allowed anything that uses Access.

my favorite little side project that i had worked on in my free time was a sort of foxpro VM written in foxpro...yeah everyone thought i was crazy.

about 3 months ago

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