I teach sailing and hang gliding. You can tell right away who's going to get hurt. It's the guy (usually a guy, but not always) that walks in, doesn't listen to instructions, and is probably the first one in line to go down the hill or helm the boat. When he does get hurt, he's mad. At you. You can get hurt doing this??
The ones who are going to succeed are the ones who listen carefully, watch a few of the aggressive ones go first, then give it a try themselves. Those people aren't the ones who grew up coddled, they're the ones who have gotten mildly hurt as children and realize that some things can hurt you.
There are so many people around today who just take for granted that everything is completely safe, no matter what you do. Are they ever surprised when they find out it isn't so.
What does your insurance company do to your premiums after the first broken arm? The second? Does it count as a preexisting condition when you move out and have to get your own insurance?
If it's anything like car insurance you're probably better off eating the few thousand rather than telling the company about it.
I got in a fight with a stove when I was a kid - I was in a school play and I was racing around the home ec room before I went on. In sock feet. Took a corner to fast and wham... a truly impressive amount of blood and stitches in my left eyebrow.
At some point the kid is going to come out of school and into the world where somebody is going to have a PB&J for lunch. It's better for them to learn how to deal with it when they're in a semi-controlled environment like school.
And no, by deal with it I don't mean daily anaphylaxis. Anyone who's that seriously allergic to something should carry their own epi pen, always and be very, very good at recognizing things that might contain their allergen, as well as their own personal signs of an impending reaction and what to do. Kids learn fast. Let them.
Read the article. Apple doesn't want to replace what Bluetooth does with NFC, they (might) want to do what NFC does with Bluetooth. Less chips, cheaper design, cheaper device. About the only thing NFC offers over BT is passive communication, which I think most of us would prefer our phones don't do anyway.
If you were a merchant and you could buy an NFC payment system and get the Android people, or you could buy a BT one and get the Android people (Android phones have BT already) AND the iPhone people, which would you do?
"that's something you don't want going over BlueTooth."
If you read the article (or the summary even), that's precisely what it's though Apple may be planning. Why wouldn't you want digital payment information going over Bluetooth? Unlike NFC, it can actually be encrypted.
"Yet she multiplied her whoredoms, in calling to remembrance the days of her youth, wherein she had played the harlot in the land of Egypt. For she doted upon their paramours, whose flesh is as the flesh of asses, and whose issue is like the issue of horses." (Ezekiel 23: 19-21)
"and lusted after her paramours there, whose members were like those of donkeys, and whose emission was like that of stallions." (Ezekiel 23: 21, NRSV)
Okay, the bible doesn't actually describe sex with a donkey, but Ezekiel sure sounds like he wanted to try it.
Little defensive, are you? What part of my post did you not understand? The part where I didn't say MOND and cousins is impossible? Or the part where I said it was unlikely?
I can also fit the Bullet Cluster data by postulating my theory of warm blue cheese attraction (plus dark matter), but that doesn't make it interesting.
A modified gravity fit for the bullet cluster appears to require neutrinos with a mass of about 2 eV. Current experimental data limits neutrino mass to possible that neutrinos weigh that much, but not particularly likely. Most physicists bet around the 1 eV range.
Modified gravity theories still require an ad hoc modification of gravity, for which there really is very little justification. As you point out yourself, we already know there are dark matter particles (neutrinos) that account for some of the missing mass, and there are actual preexisting theoretical reasons to think there might be others.
So one theory requires an unjustified (and often finely tuned) modification to gravity plus dark matter, while the other requires dark matter, which we already suspected existed anyway.
If someone breaks into a site that keeps your password in plain text, the pattern will be pretty obvious if they care to look. Especially with the @ signs.
If the site hashes your password as they should, who cares if the bad guys stole the hash?
Remember to look at the RED spectrum. That's the one that you actually get on the ground. Also, it's highly unlikely that paint is highly absorptive uniformly across the IR.
"So weirdly enough this one specific "Visibly" white paint has one of the highest emissivities, and would absorb and reflect a lot of heat almost the same as the black paints!!!"
Perfect - a paint that reflects visible light (most of what we get from the sun) and also radiates in the IR very well (any heat that has already been absorbed).
No. The problem is not that they're cold, it's that they don't have enough mass to produce the necessary pressure. If you could somehow heat up the whole brown dwarf all you'd end up with is a puffier brown dwarf.
Fusion reactions require pressure to squeeze the reactants together hard enough to fuse. Getting them very hot can help (the atoms ram into each other harder) but only if you have some mechanism to contain them.
Newtonian mechanics is simpler, but doesn't explain all the data. Relativity is more complex, yes, but it DOES explain all the data. The principle of parsimony suggests that if we're presented with two explanations that both explain the observations then we pick the simpler.
If you just modify gravity it's arguable whether that change is simpler than postulating non-baryonic dark matter or not. But modified gravity doesn't explain the observations. You have to modify gravity AND have dark matter. Or you can just have dark matter. Both explain the observations.
Large stars do not become brown dwarfs. Brown dwarfs don't have solar winds. Brown dwarfs aren't Earth size - they are many times larger than Jupiter. Nemesis is a piece of fiction - it hasn't been ruled out but there's no evidence at all for it's existence. If Nemesis did exist, it would be throwing comets at us, not asteroids, and they would come from within our solar system.
We know roughly how much the galaxy weighs (although that number has some pretty big error bars and is refined on a regular basis). We've got a rough idea of how much luminous matter (stars) there probably is in the galaxy by extrapolation (we can't see the whole galaxy), and we can't even see all the luminous matter, especially that's even a little ways away. Astronomers are very aware of this.
Nevertheless, gravity provides a pretty good way of measuring the mass of things and lots of other evidence, including the distribution in masses of objects we can see, models of the generation of matter in the big bang, and the physics of star formation (anything big will ignite fusion and burn, a high density of little things tend to collapse into a star).
You might want to consider the idea that you could learn more by asking questions rather than stating an uninformed opinion, sticking to it as fact, and implying you're right where thousands of highly educated professionals who have dedicated their lives to understanding these things are wrong.
It's tough to encode high level laws in robots without brains.
Those robots that weld cars together don't exactly worry too much about hurting any humans who are dumb enough to get their smelly contaminated hydrocarbon bits in the way.
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I teach sailing and hang gliding. You can tell right away who's going to get hurt. It's the guy (usually a guy, but not always) that walks in, doesn't listen to instructions, and is probably the first one in line to go down the hill or helm the boat. When he does get hurt, he's mad. At you. You can get hurt doing this??
The ones who are going to succeed are the ones who listen carefully, watch a few of the aggressive ones go first, then give it a try themselves. Those people aren't the ones who grew up coddled, they're the ones who have gotten mildly hurt as children and realize that some things can hurt you.
There are so many people around today who just take for granted that everything is completely safe, no matter what you do. Are they ever surprised when they find out it isn't so.
What does your insurance company do to your premiums after the first broken arm? The second? Does it count as a preexisting condition when you move out and have to get your own insurance?
If it's anything like car insurance you're probably better off eating the few thousand rather than telling the company about it.
The giant grin probably gave it away too.
I got in a fight with a stove when I was a kid - I was in a school play and I was racing around the home ec room before I went on. In sock feet. Took a corner to fast and wham... a truly impressive amount of blood and stitches in my left eyebrow.
I made a fantastic return for the next show.
At some point the kid is going to come out of school and into the world where somebody is going to have a PB&J for lunch. It's better for them to learn how to deal with it when they're in a semi-controlled environment like school.
And no, by deal with it I don't mean daily anaphylaxis. Anyone who's that seriously allergic to something should carry their own epi pen, always and be very, very good at recognizing things that might contain their allergen, as well as their own personal signs of an impending reaction and what to do. Kids learn fast. Let them.
Not to mention you learn what the limits are, what's really dangerous and what isn't.
I know lots of full on adults who can't be trusted in an unfamiliar situation by themselves because they've got no idea how to deal with it.
Read the article. Apple doesn't want to replace what Bluetooth does with NFC, they (might) want to do what NFC does with Bluetooth. Less chips, cheaper design, cheaper device. About the only thing NFC offers over BT is passive communication, which I think most of us would prefer our phones don't do anyway.
If you were a merchant and you could buy an NFC payment system and get the Android people, or you could buy a BT one and get the Android people (Android phones have BT already) AND the iPhone people, which would you do?
Actually, I would prefer my payments not happen without some input from me. Thanks anyway though.
"that's something you don't want going over BlueTooth."
If you read the article (or the summary even), that's precisely what it's though Apple may be planning. Why wouldn't you want digital payment information going over Bluetooth? Unlike NFC, it can actually be encrypted.
Stereo Bluetooth has worked on iPhones for a couple of years now, and on Macs forever. I've never had a problem with it.
You did get a couple of Apple anti-fanboy mods though. Congrats.
For really important stuff, that's what dedicated lines are for. For the rest, SSH tunnels and VPNs.
It's this habit of putting your secret documents on the same machine that serves your website that's getting people in trouble.
"Yet she multiplied her whoredoms, in calling to remembrance the days of her youth, wherein she had played the harlot in the land of Egypt. For she doted upon their paramours, whose flesh is as the flesh of asses, and whose issue is like the issue of horses." (Ezekiel 23: 19-21)
"and lusted after her paramours there, whose members were like those of donkeys, and whose emission was like that of stallions." (Ezekiel 23: 21, NRSV)
Okay, the bible doesn't actually describe sex with a donkey, but Ezekiel sure sounds like he wanted to try it.
Little defensive, are you? What part of my post did you not understand? The part where I didn't say MOND and cousins is impossible? Or the part where I said it was unlikely?
I can also fit the Bullet Cluster data by postulating my theory of warm blue cheese attraction (plus dark matter), but that doesn't make it interesting.
A modified gravity fit for the bullet cluster appears to require neutrinos with a mass of about 2 eV. Current experimental data limits neutrino mass to possible that neutrinos weigh that much, but not particularly likely. Most physicists bet around the 1 eV range.
Modified gravity theories still require an ad hoc modification of gravity, for which there really is very little justification. As you point out yourself, we already know there are dark matter particles (neutrinos) that account for some of the missing mass, and there are actual preexisting theoretical reasons to think there might be others.
So one theory requires an unjustified (and often finely tuned) modification to gravity plus dark matter, while the other requires dark matter, which we already suspected existed anyway.
It seems like all the hooplah about passwords is covering up for bad systems, not bad users.
If someone breaks into a site that keeps your password in plain text, the pattern will be pretty obvious if they care to look. Especially with the @ signs.
If the site hashes your password as they should, who cares if the bad guys stole the hash?
Funny, you misspelled it. ;)
I have symbols in most of my passwords. It's all kinds of fun when you find yourself using a european keyboard.
Why bother with a password at all then?
If you're connecting to an outside source, use an ssh tunnel. If it's internal, who cares?
Passwords on post its are silly.
Remember to look at the RED spectrum. That's the one that you actually get on the ground. Also, it's highly unlikely that paint is highly absorptive uniformly across the IR.
"So weirdly enough this one specific "Visibly" white paint has one of the highest emissivities, and would absorb and reflect a lot of heat almost the same as the black paints!!!"
Perfect - a paint that reflects visible light (most of what we get from the sun) and also radiates in the IR very well (any heat that has already been absorbed).
No. The problem is not that they're cold, it's that they don't have enough mass to produce the necessary pressure. If you could somehow heat up the whole brown dwarf all you'd end up with is a puffier brown dwarf.
Fusion reactions require pressure to squeeze the reactants together hard enough to fuse. Getting them very hot can help (the atoms ram into each other harder) but only if you have some mechanism to contain them.
You don't understand Occam's razor.
Newtonian mechanics is simpler, but doesn't explain all the data. Relativity is more complex, yes, but it DOES explain all the data. The principle of parsimony suggests that if we're presented with two explanations that both explain the observations then we pick the simpler.
If you just modify gravity it's arguable whether that change is simpler than postulating non-baryonic dark matter or not. But modified gravity doesn't explain the observations. You have to modify gravity AND have dark matter. Or you can just have dark matter. Both explain the observations.
Ah, modified gravity gets better and better.
To fit the data (ALL the data) you need to modify gravity, have neutrinos with an unlikely amount of mass AND have non-baryonic dark matter.
Or you can just have non-baryonic dark matter.
Mods, this isn't informative.
Large stars do not become brown dwarfs. Brown dwarfs don't have solar winds. Brown dwarfs aren't Earth size - they are many times larger than Jupiter. Nemesis is a piece of fiction - it hasn't been ruled out but there's no evidence at all for it's existence. If Nemesis did exist, it would be throwing comets at us, not asteroids, and they would come from within our solar system.
Please stop before you hurt yourself.
We know roughly how much the galaxy weighs (although that number has some pretty big error bars and is refined on a regular basis). We've got a rough idea of how much luminous matter (stars) there probably is in the galaxy by extrapolation (we can't see the whole galaxy), and we can't even see all the luminous matter, especially that's even a little ways away. Astronomers are very aware of this.
Nevertheless, gravity provides a pretty good way of measuring the mass of things and lots of other evidence, including the distribution in masses of objects we can see, models of the generation of matter in the big bang, and the physics of star formation (anything big will ignite fusion and burn, a high density of little things tend to collapse into a star).
You might want to consider the idea that you could learn more by asking questions rather than stating an uninformed opinion, sticking to it as fact, and implying you're right where thousands of highly educated professionals who have dedicated their lives to understanding these things are wrong.
It's tough to encode high level laws in robots without brains.
Those robots that weld cars together don't exactly worry too much about hurting any humans who are dumb enough to get their smelly contaminated hydrocarbon bits in the way.