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School Installs Biometric Fingerprint System For Cafeteria

tragedy Re:Not about ease, about authority (230 comments)

As it is, you can't 'forget' to bring your fingerprint with you, or lose it on the bus, or have it stolen.

You can have your fingerprint stolen, although that's unlikely for school lunches. You can also lose your fingerprint from simple mechanical wear or chemicals. You can also simply not have fingerprints to start with.

2 days ago
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Medical Milestone: Scientists Reset Human Stem Cells

tragedy Re:Well this should piss off everybody (74 comments)

Righties hate killing embryos for stem cell research.

Which has always struck me as a bit illogical since the embryos actually used are already slated for destruction. What do people think is going to happen to leftover human embryos that aren't slated to be implanted?

3 days ago
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Congress Can't Make Asteroid Mining Legal (But It's Trying, Anyway)

tragedy Re:LOL (211 comments)

And since nothing bad happened, what exactly is your point?

I think that was exactly the point.

It's sort of like how, when North Korea attempted a satellite launch not too long ago, the news was full of stories about how incredibly irresponsible it was since a satellite breaking up in orbit could turn into a chain reaction that would scour all orbits of all satellites. These stories were coming, of course, from the propaganda machines of countries which have, on more than one occasion, intentionally blown up satellites in orbit to demonstrate military power.

3 days ago
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To Really Cut Emissions, We Need Electric Buses, Not Just Electric Cars

tragedy Re:Batteries? Seriously? (485 comments)

1. Swappable electric car batteries are the sane solution for fast-charging electric cars. Good to know it's actually on someone's radar. As for the cost, a city bus costs on the order of half a million dollars with operating costs around a quarter of a million dollars a year. With numbers like that, the batteries don't sound all that expensive. How many batteries you would need per bus depends on a number of factors. Charge time is a big one.

2. The trailer would be for mostly highway driving on fixed routes. Not a lot of tight twists and turns. The trailer also wouldn't have to be very long, and it's not as if segmented buses don't already exist. Aside from trailers, there's the possibility of roof mounting, or having some removable seats at the back and putting the extended battery storage inside the bus.

about a week ago
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In France, a Second Patient Receives Permanent Artificial Heart

tragedy Re:I really don't my vital body parts to be on wif (183 comments)

Encryption, message signing ... does it ring any bells?

All of which is meaningless if the cell phone is compromised. Most indications are that, these days, even without viruses, most cell phones are already intentionally compromised straight from the factory. This really is a job for a dedicated device.

about a week ago
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To Really Cut Emissions, We Need Electric Buses, Not Just Electric Cars

tragedy Re:Batteries? Seriously? (485 comments)

It's also a question of flexibility. Sure, the bus doesn't need to go down every road, but they more or less can, providing flexibility

A electrically powered bus with overhead wires _and_ a battery could go down every road, more or less. There's still the problem of long haul trips. I'm still a little unclear on why the buses have to have a fixed battery capacity that has to charge in place as opposed to swappable, extendable batteries. Buses travel around on fixed routes with set schedules. Why can't there be multiple batteries for each bus, left charging at swap stations along the route. Make them automated. The driver can drive up, hop out, put a key into the swap station, position some forks onto the battery in the bus, push a button and have the used battery hauled out and a charged one slotted in. The whole thing shouldn't take more than five minutes. For long trips, why can't a bus haul a battery trailer with extra capacity?

about a week ago
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Battle of the Heavy Lift Rockets

tragedy Re:Competition is good. (211 comments)

But you either meant that, or you meant something else by "managed". Hence why the sentence is confusing.

about a week ago
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Battle of the Heavy Lift Rockets

tragedy Re:Competition is good. (211 comments)

If the Soviet Union had managed LEO or the moon, do you think they would have not used it?

Where you wrote "do you think they would have not used it?", you were referring to your previous sentence, so the meaning was "do you think they would have not used it to gain a huge strategic and tactical advantage?" Which basically means "do you think they would have not used it to gain command of LEO militarily. So, if "managed" means "command of LEO militarily", then the sentence boils down to: "If the Soviet Union had gained command of LEO militarily, then do you think they would have not used it to gain command of LEO militarily. "If X, then do you not think X" is a tautology.

about a week ago
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Apparent Meteorite Hits Managua, Nicaragua, Leaving Crater But No Injuries

tragedy Re:Meteorite my ass (107 comments)

The photos showing soldiers in helmets and vests sweeping the area with metal detectors suggests that they have at least considered it as a possibility.

about a week ago
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Apparent Meteorite Hits Managua, Nicaragua, Leaving Crater But No Injuries

tragedy Re:Meteorite my ass (107 comments)

I found a few other pictures looking around and there's definitely a lot of plants angled away from the crater. It might not have been a meteorite, but it definitely looks like there was an explosion rather than just a backhoe digging.

about a week ago
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Apparent Meteorite Hits Managua, Nicaragua, Leaving Crater But No Injuries

tragedy Re:Meteorite my ass (107 comments)

I actually took a look at the airport in google maps to see if I could identify the spot. There isn't enough to go on from the article. Some parts seem to definitely have ground-covering vegetation between the trees, but it's less clear in other parts, where it does look fairly brown between the trees. That could just be brown vegetation, however. Overall, the ground in the pictures seems far too devoid of small plants close to the crater. I'm definitely thinking that there's a layer of dirt there covering everything.

about a week ago
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Apparent Meteorite Hits Managua, Nicaragua, Leaving Crater But No Injuries

tragedy Re:Meteorite my ass (107 comments)

Trees being uprooted by sinkholes tend to be falling into the hole, not away from it. It's hard to see in the photo, but that tree looks like it's had most, but not all leaves blown off it. As for where the ejecta vanished to, it looks like where it vanished to is the area immediately around the crater. We don't have any sort of before and after picture or a picture of another part of the same wooded area, but the part that we can see seems to be all dirt except for where there are taller trees. It might be the case that there's normally nothing but bare dirt visible, or it might be the case that all the ground covering vegetation is covered in the thick layer of ejected dirt. There also seem to some loose, recently deposited, rocks outside the crater.

about two weeks ago
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Battle of the Heavy Lift Rockets

tragedy Re:Competition is good. (211 comments)

The part where you said "If the Soviet Union had managed LEO or the moon, do you think they would not have used it?" is the confusing part. It's confusing because you seem to have written it from a parallel universe where the Soviet Union never "managed LEO". If by "managed" you meant using taking command of LEO militarily, then the sentence in question is a tautology and one wonders why you even wrote it.

about two weeks ago
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Battle of the Heavy Lift Rockets

tragedy Re:Competition is good. (211 comments)

The article you linked to didn't say that Tesla drive units fail after a year. It said that the warranty used to be 8 years or 125,000 miles and that they've just extended it. There were a few anecdotes provided, but the article itself admitted that the source was inherently biased. So, basically, car parts wear out and some cars are defective from the factory. True for cars whether they're gasoline, diesel, LPG, electric, etc.

about two weeks ago
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Battle of the Heavy Lift Rockets

tragedy Re:Competition is good. (211 comments)

I'm sorry, you're attacking Musk because car parts wear out eventually? And he's extending the warranty for some of those parts?

about two weeks ago
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Battle of the Heavy Lift Rockets

tragedy Re:Competition is good. (211 comments)

If the Soviet Union had managed LEO or the moon, do you think they would have not used it?

This is sort of a confusing sentence. The Soviet Union _did_ manage LEO in just about every way you can "manage" LEO. They also got probes, but not people, to the moon.

about two weeks ago
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Exomoon Detection Technique Could Greatly Expand Potential Habitable Systems

tragedy Re:Lies (66 comments)

Europa is probably a non-starter due to the high radiation, but Callisto gets two orders of magnitude less and Ganymede about three orders of magnitude less than that.

about three weeks ago
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How the Ancient Egyptians (Should Have) Built the Pyramids

tragedy The method seems unneccessary. (202 comments)

If their method requires 50 people to move a 2.5 ton stone block at .5 meters per second, why not just use some poles and yokes and just have the 50 men pick up and carry the stone at twice that speed? That's 50 kilograms each. Heavy, sure, but not more than a worker can carry. Obviously the rarer, heavier stones would require other techniques anyway.

about three weeks ago
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How the Ancient Egyptians (Should Have) Built the Pyramids

tragedy Re:They made the blocks into wheels (202 comments)

If 10 people tries to roll a 2500 kg block uphill, they would each have to lift 250 kg.

In the spirit of pedantry I feel inclined to point out that what you say would only be the case if the "hill" is a 90 degree cliff.

about three weeks ago
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Apollo 11 Moon Landing Turns 45

tragedy Re:Where were you when the Eagle landed? (211 comments)

From the article you link to:

Before the war, Bush had gone on the record as saying, "I don't understand how a serious scientist or engineer can play around with rockets",[56] but in May 1944, he was forced to travel to London to warn General Dwight Eisenhower of the danger posed by the V-1 and V-2.

So, it looks like he wasn't a fan of rocketry in general, which wasn't really particularly visionary of him in retrospect.

about 2 months ago

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