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Comment Re:No interaction means you don't know (Score 1) 226

..but if there were some way to make sure the two "copies" do not interact with anything.

That's my entire point! If you assume that you can make a system where there is no interaction then there is absolutely no difference whatsoever for all concerned between position A or position B. Hence there is absolutely no way to know whether you are in position A or B until you interact so there is no magical "teleportation". It's the same as Schrodinger's cat: the cat is either alive or dead and you find out which when you open the box and there is no undetermined state as per the common misconception.

To get the EPR paradox you need an entangled state for two particles. What you have is a single, unknown state of one particle (or person). These are not the same.

Comment Re:Sorry, what problem was that again? (Score 1) 692

You don't have to bother revoking anything. You will get paid enough for 3 children. If you have 4 children? Too bad. Get a job.

Well, that's the theory anyway.

I'd feel better about a lot of our welfare systems and a basic income if we could actually make that limitation stick. I certainly don't want people living in poverty, but if you keep adding more benefits, people will keep assuming they'll be taken care of by the government, no matter what bad decisions they make for themselves. If someone with only 2 kids or no children wants to be charitable and help you out? Fine. We just have to not give anyone the idea that they have a constitutional right to be provided for by the government in spite of the large number of hungry, nigh immortal mouths they have decided to dump on the system.

Comment Re:It is simple (Score 1) 692

Unlikely.

Even if they become functionally immortal, they can still be killed, and they *will* be killed eventually. It's just a matter of time and probabilities. Give it enough time, and even freak accidents start becoming near certainties.

Of course, they could very well last an unprecedented amount of time, if they were careful and very, very forward looking.

Comment Re:Exodus (Score 2) 692

The logistics of having an exodus making a significant difference are somewhat difficult though. Consider the current birth rate of 350K new humans per day and compare with the lack of orbital launch capacity. Then try to figure out how to reach the manufacturing capability to build hundreds of city sized starships per year. One of the variables is going to have to change in some way or spreading across the galaxy isn't going to do much to reduce earth population.

Well, maybe someone will find a couple of dozen stargates tucked away somewhere.

Comment Re:I hate fear mongering... (Score 2) 227

Let me drop a 2 pound drone on your head from just 10 feet above you.

IF you survive it is unlikely you'll make such ignorant statements ever again, and I'm not even talking about loading it up with ordinance or even simply flying into you at high speed.

It's is trivial for a 2 pound drone to kill you by accident, all it takes is the most minimal effort to do it intentionally.

Comment Re:Tesla enables Edison to win the endgame? (Score 1) 597

No, it doesn't.

DC is in fact absolutely shitty for long hauls, and that is in fact why we use AC.

Power plants run alternators at specific RPMs intentionally to produce AC. There are no American hydro power generation stations using DC. That would be stupid. Every single one of them uses 3600 hertz multiphase output, one of those phases will give you 60hz AC.

The parasitic losses of DC over long distance is reason enough that it's not done, when you couple in the fact that it HAS TO BE AC in order to do any sort of reasonably efficient voltage conversion just seals the deal.

It's used in SHORT haul international interconnects when each side uses different frequencies for their grid OR when they don't want to stay phase synced.

DC is stupid for normal people for anything other than the last leg, like between your Wallwart and device.

There are three ways to cut down DC voltage: convert to AC and use a transformer, use PWM and large capacitor bank to smooth it back to DC... Or resistive and essentially turn the extra voltage into waste heat. All of those suck, the last most of all, but also the one that can handle large loads best.

There is one way to boost DC voltage. Convert it to AC, or at least half wave AC and use a transformer.

Comment Too low: don't forget the power requirements! (Score 4, Insightful) 597

I can see AC to the doorstep a big efficient whole house power supply that has 12vdc and 48vdc rails that are distributed thorough the house and battery backed, and few 220v "appliance circuits" off the AC.

48V and 12V lines are far too low to be sage and/or sensible. Remember that the power used is equal to the voltage times the current and that the heating of the wire carrying the current goes as the square of that current. Typical house wiring is good for ~30A of current and supplies several plugs in a room typically. With a 12V circuit you limit the power of all the devices connected to this circuit to 360W vs. the 6.6kW you get now (or 3.3kW if you live in North America). Even with a 48V circuit you only get 1.44 kW.

The result is that either you need to rewire the entire house with massively thick, and therefore expensive, cables to carry the far higher currents or you need to use a higher voltage for transmission. Even the factor of two reduction between Europe and Canada/US is noticeable for some devices: electric heaters are far punier than their European counterparts, kettles take far longer to boil, and Electric lawnmowers are practically useless etc. If you drop the voltage by another factor of 2-10 below even Canada/US then almost all devices will be impacted.

Comment Skin effect: DC more deadly at same voltage (Score 2) 597

Because you can't electrocute people with DC?

Actually it is easier to electrocute someone with DC the reason it rarely, if ever, happens is because most DC sources are very low voltage and cannot drive enough current through a human body to be a problem. A high frequency, alternating current is actually relatively safe because of something called the skin effect where only the outer surface of the object conducts the current. For a human this confines the current to your skin and away from vital organs like your heart. It is the reason why Tesla himself could discharge lightning bolts from his fingers without being electrocuted. However you do have to be careful since where the spark leaves your body can get burnt due to the heat of the plasma created.

Comment Re:Use High voltage DC stupid... (Score 2) 597

Heh I should have read your whole post before replying to the first line, but let me pick you apart in another one instead.

1. Most stuff just works on high voltage DC as discussed above. Most switching power supplies simply don't know or care about AC or DC and due to their efficiency switching power supplies are used in almost everything electronic.

Absolutely wrong. The first thing most power supplies do is step down from high voltage AC to something in the general range of whats needed on the highest output value. They step down with a transformer. That transformer only works with AC, if you put DC in it, you're just going to burn it up as it turns into a magnet carrying more current (because its not AC, so the there is no inductive resistance, so there is more current). Please don't give anyone advice on electricity. Ever.

2. It's easier (and more efficient) to use high voltage DC for charging the batteries. All you need is a rectifier to convert that 220 into about 250V DC and charge the batteries, which is about as simple and efficient as it comes.

... You do realize those batteries you're referring to are actually made up of a bunch of smaller batteries right? There is no single cell at 200v. You aren't charging one 200v batter, you're charging a handful of 12v batteries that you're just blissfully ignorant of.

3. It's easer (and more efficient) to make an inverter that uses high voltage DC as input. It's pretty easy to just flip the current one way then the other to get AC sufficient to run most induction motors and transformer powered devices.

You have absolutely no idea what you're talking about. The conversion from DC to AC is THE BIGGEST LOSS in the inverters you're referring to. The actual transformer itself is pretty damn efficient if designed properly. Dealing with high voltage DC is extremely dangerous. It ARCs over distances that AC won't. You can put 200v AC traces on a circuit board with little space between them. Do the same thing with the same DC voltage and the board is going to randomly arc all over itself.

4. It's more efficient to use higher voltage in terms of wire size because IxR losses are less for the same power transfer. Chances are the same wires you have now will be fine, but if you go to low voltage (say 13.8V like in your car) you are going to need bigger conductors to avoid the voltage drops over long high current runs. Use higher voltage and lower current, and stick with the wires you have.

The first part is true, larger wires are better for lower current loss. The rest of this is false. DC has different properties than AC. Insulators, wire spacing, and load will behave differently at 200v AC versus DC. You CAN NOT use the same wiring unless you want to burn the building down. Please don't ever tell people anything about electrical wiring, you're going to get someone killed.

The rest of your post is pretty much factually incorrect in everyway as well, but I'm tired of pointing out how little you seem to know about the subject. Again, please stop trying to tell people things like this, its fraking dangerous and people could die from this ignorance.

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