Rocket scientists (way above your level of expertise) used to say landing rockets vertically and reusing them afterwards was never going to work
Leading up to the first time it was done(by Blue Origin), it wasn't that people in the industry didn't think it was possible. It was that there was doubt it would meaningfully reduce the cost of launches. Which is still an open question.
and model 3 has almost 500,000 preorders
Given how loose(that's being kind) Musk is with his numbers and how off he has been with his projections(his Model 3 delivery numbers were off by a whopping 83%!), I take the line reservation numbers with a huge grain of salt. And that's what they are, a $1000 refundable deposit to hold a position in line. They are not pre-orders. And given the continuing delay of a functional, fully tested production line, do you think that number(whatever it truly is), is going up or down as the delay continues?
(yes, I know it's delayed a bit on its agressive rollout schedule,
The Model 3 was originally supposed to be released in 2016. It's now late 2017 and is still being built by hand and beta tested. The roll-out party in July was a facade, but not a surprise given that Musk's option milestone vesting is based on the start of Model 3 production and made up gross margin numbers.
but not nearly as much as previous models, months rather than years)
How do you know since the delay is still continuing?
Why people still give the guy credibility when it comes to numbers is beyond me - he said years ago Tesla wouldn't need to access the capital markets again and look how many have happened since. The last one was selling of junk bonds and there's going to be another raise needed that will be declared either later this quarter or early next. Q3 numbers are going to be a blood bath and the worse yet. Analysts are starting to revise their numbers to a loss at over $7 a share!
Tesla is circling the drain, but don't worry, Musk will still walk away with billions. Are you going to be among the ones left holding the bag?
I have made posts about this before, but Elon is talented in running big businesses
Look at the financials of Tesla and tell me he's talented in running a business. Incredible stock price, yes, but that just means he's part PT Barnum with the big institutions playing along with the pump and eventually dump.
Everyone who wanted one in the short term snapped them up right before the tax went into effect.
There's definitely that going on, but not only was there a big fat goose egg for registrations in April, there were only 5 in May:
http://www.investopedia.com/ne...
Anyway you look at it, that's a huge drop off in demand because a government subsidy was taken away.
He says Tesla is ahead and in a sense that is sort of true - I also think they are at the forefront of self-driving cars. But a large part of that is because they are way ahead in collecting real world data.
Why do people believe Tesla is ahead in self-driving cars? Musk's empty promises? From all accounts their AP2 isn't as capable as their older Mobileyed-based AP1. And how is Tesla ahead of Waymo or MobileEye for collecting real-world data? Heck, most of Tesla's data is collected in California. There are entire countries with large road networks with nary a Tesla around. Musk is full of hot air and I'm a little disappointed the Woz doesn't see through it. Oh well, it will all come to light as Tesla has no hope of ever turning a profit. Bankruptcy or bought at a fraction of its current price.
Instruction level parallelism in superscaler core designs have hit a limit. More pipeline stages becomes counter productive when a misprediction requires a flush. Thread level parallelism exploited by multi core designs can only go so far; only certain tasks can exploit massive parallelism(e.g. ray tracing). Increases in clock speed have hit a wall with current silicon based semiconductors. Exotic semiconductors and incredible cooling systems aren't practical for the mass market.
I used to write code for an enterprise network switch platform and our C code base started being built with g++. The toolbox analogy is apt. Forget the object orientated fluff, just use C with the STL container library. You have an optimized, standard interface library into commonly used data structures.
SF Bay Area tax revenue has been increasing just fine: http://www.sfchronicle.com/business/networth/article/Bay-Area-property-tax-assessments-on-a-roll-8349188.php
Don't forget that under prop 13 the property tax of a unit is reassessed at market value when it exchanges hands or a brand new unit is sold. With the current housing boom(bubble) going incredibly strong in this part of the country tax revenue has been increasing significantly.
There's no excuse for SF's budget problems except for its own politicians. In SF there are homeless everywhere. Just like there was 20 years ago. Yet in 2016 the SF budget states $241 million was spent on the city's homeless problem. Nearly a quarter of a billion dollars! Currently, the city employs over 30,000 workers to serve a population of 830,000. In 1970 there wasn't even half that many city employees and the population was at 714,000. With what technology and automation have done in 45 years, why is there such a ridiculous ratio of city workers to city population? Especially glaring to the people who live there who still see trash in the streets and have to keep an eye out so they don't step on human feces walking down the sidewalk.
My question for you is - Why should the rest of California's home owners pay with the repeal of prop 13 because San Francisco(and its residents who keep voting for this type of government) is having budget problems running its own socialism experiment?
Don't forget that under prop 13 the property tax on a unit is reassessed based on the sale price when it exchanges hands or a newly built unit is sold. With the current housing boom/bubble going on that means quite a large increase in tax revenue.
There's really no excuse for the city of SF to have budget problems except for the greed of its own politicians. In San Francisco there are homeless everywhere. Just like 20 years ago. You have to be careful not to step on human feces in certain places. Yet the city's budget states that $241 million dollars was spent on its homeless problem in 2016. Nearly a quarter of a billion dollars! San Francisco employees 30,000 city workers in a city with 837,000 people. In 1970 the number of city workers was 15,000 serving a population of 714,000. The current ratio is outrageous, especially to people living in the city who wonder what's the result of having all these employees when the streets are filled with trash. The argument as to why SF city worker compensation is so high is that today's city employees are trained in specializations. That's a fair argument. Yet why does the city need twice as many employees for a population that's only 15% greater than it was over 45 years ago? When modern technology has brought more automation in that time and not less? Half of SF's budget goes to its employees.
My question for you is - why should the rest of California's home owners have to pay with the repeal of prop 13 because San Francisco decided(through its residents who keep voting for this type of government) to run its own socialism experiment?
Divestment doesn't do anything except put said stocks on sale for another buyer. If you want to hurt the business of fossil fuel companies then stop buying their products.
<quote><p>Why the fuck would any Linux developer want to do this? It's not as if Windows 10 offers any significant, or even real, architectural advantage, and it's not like Linux doesn't have plenty of its own development tools. So far as I can tell, Windows 10 has absolutely no developer advantages at all, and in fact, simply represents a pointless extra layer for any developer working on Linux.</p></quote>
Nothing significant? How about good GUI development tools. I write code for a Linux application written in C++. The best setup I've found is Visual Studio w/ WinGDB attached to gdb running the process in a Linux VM. XCode can remotely attach to gdb as well.
What's the best Linux solution for debugging? Emacs?
<quote><p>I loved the book The Martian, which has a lot of technology in it (the movie was a bit dumbed down compared to the book, but not entirely).</p></quote>
<p>My only problem with "The Martian" is that the premise for him being marooned on Mars (at least in the film) is completely bogus. Mars has 1% of the atmospheric pressure of earth, there's absolutely no way that a dust storm could cause anything like the effects it had in the movie. It certainly could not lift rocks, never mind knocking over a rocket.</p></quote>
Yet the story acknowledges the very thin atmosphere when Watney removes the front nose cover of the Ares 4 MAV to shed weight and puts a tarp over the hole.
"While the P100D Ludicrous is obviously an expensive vehicle, we want to emphasize that every sale helps pay for the smaller and much more affordable Tesla Model 3 that is in development. Without customers willing to buy the expensive Model S and X, we would be unable to fund the smaller, more affordable Model 3 development."
Given Tesla's history of missed dates and missed production numbers, should we be concerned about the Model 3 viability and timeliness given this statement?
You can compare pointer addresses in C. The signature uses void pointers so that any pointer type can be passed. In the function they are cast as a byte type so the arithmetic works(the third argument is the length in bytes). e.g.
I've been telecommuting for the past two years, for a virtual company, and I hope I never need to give it up.
There are some things I miss, in particular (a) my wife not needing to keep our kids somewhat quiet during school vacations, and (b) having a ready-made social life due to being cooped up with coworkers.
But after working out some of the kinks, and with a just a little extra self-discipline, it's so, so worth it.
Even if an employer needs to pay and $5k/year to cover telecommute-specific costs (such as decent video conference equipment, etc.), it seems it must be a win-win for just about everyone involved. (At least for software development jobs. Not sure about other kinds.)
$5k/year for telecommute costs? Maintaining a VPN and having decent conferencing equipment shouldn't cost that much. And if it does, the savings in office space(have you seen what SV office space costs?) more than makes up for it.
Not really. At this point Russia has the ability to deliver a crippling first strike on the entire west and they will do everything possible to maintain this position. You can think of the US as a toxic parasite nailed to a table. It can of course still spew forth toxines, when injured but there are so many antidotes to its products in place, it can be slowly killed without fear of retaliation. We can choke it off economically by trading without dollars, we are in absolute control of it militarily.
The US, as well as other countries, have second strike capability with its nuclear subs.
"The practical application of that is you could fly long distances over the Earth very, very quickly but also that it's very useful as an alternative to a rocket for putting satellites into space," Smart said.
You'd still need a rocket engine to get it up to speed to where a scramjet can start working, unless it was a hybrid design similar to how the SR71 worked, where at full speed most intake air bypassed the J-58 compressor and it operated closer to a ramjet.
Then the rocket would be needed again when reaching an altitude where there's not enough atmospheric oxygen to finally put the satellite into LEO. However, hopefully the craft will not have to carry nearly as much oxidizer to do it.
Plenty of cars in that price range have "inherent safety" and would protect its occupants in a similar accident, even though they run on an internal combustion engine.
Is it that difficult to make a low-power 80x86 ISA chip to compete with ARM manufacturers? I know the legacy instruction decoding is always going to take space, but I thought at this point the transistor count compared to the rest of the chip was small. I figured Intel with their leading edge fabs would be able to pull it off.
Linus used gotos to a label at the end of some functions. It's a straightforward way to implement clean up that has to happen regardless if a failure occurs at some point in the function.
Slashdot Mirror
Rocket scientists (way above your level of expertise) used to say landing rockets vertically and reusing them afterwards was never going to work
Leading up to the first time it was done(by Blue Origin), it wasn't that people in the industry didn't think it was possible. It was that there was doubt it would meaningfully reduce the cost of launches. Which is still an open question.
and model 3 has almost 500,000 preorders
Given how loose(that's being kind) Musk is with his numbers and how off he has been with his projections(his Model 3 delivery numbers were off by a whopping 83%!), I take the line reservation numbers with a huge grain of salt. And that's what they are, a $1000 refundable deposit to hold a position in line. They are not pre-orders. And given the continuing delay of a functional, fully tested production line, do you think that number(whatever it truly is), is going up or down as the delay continues?
(yes, I know it's delayed a bit on its agressive rollout schedule,
The Model 3 was originally supposed to be released in 2016. It's now late 2017 and is still being built by hand and beta tested. The roll-out party in July was a facade, but not a surprise given that Musk's option milestone vesting is based on the start of Model 3 production and made up gross margin numbers.
but not nearly as much as previous models, months rather than years)
How do you know since the delay is still continuing?
Why people still give the guy credibility when it comes to numbers is beyond me - he said years ago Tesla wouldn't need to access the capital markets again and look how many have happened since. The last one was selling of junk bonds and there's going to be another raise needed that will be declared either later this quarter or early next. Q3 numbers are going to be a blood bath and the worse yet. Analysts are starting to revise their numbers to a loss at over $7 a share!
Tesla is circling the drain, but don't worry, Musk will still walk away with billions. Are you going to be among the ones left holding the bag?
I have made posts about this before, but Elon is talented in running big businesses
Look at the financials of Tesla and tell me he's talented in running a business. Incredible stock price, yes, but that just means he's part PT Barnum with the big institutions playing along with the pump and eventually dump.
Everyone who wanted one in the short term snapped them up right before the tax went into effect.
There's definitely that going on, but not only was there a big fat goose egg for registrations in April, there were only 5 in May: http://www.investopedia.com/ne... Anyway you look at it, that's a huge drop off in demand because a government subsidy was taken away.
He says Tesla is ahead and in a sense that is sort of true - I also think they are at the forefront of self-driving cars. But a large part of that is because they are way ahead in collecting real world data.
Why do people believe Tesla is ahead in self-driving cars? Musk's empty promises? From all accounts their AP2 isn't as capable as their older Mobileyed-based AP1. And how is Tesla ahead of Waymo or MobileEye for collecting real-world data? Heck, most of Tesla's data is collected in California. There are entire countries with large road networks with nary a Tesla around. Musk is full of hot air and I'm a little disappointed the Woz doesn't see through it. Oh well, it will all come to light as Tesla has no hope of ever turning a profit. Bankruptcy or bought at a fraction of its current price.
Yes, just change the need for natural gas turbines from 'base load' to 'peak load'. What a joke.
Instruction level parallelism in superscaler core designs have hit a limit. More pipeline stages becomes counter productive when a misprediction requires a flush. Thread level parallelism exploited by multi core designs can only go so far; only certain tasks can exploit massive parallelism(e.g. ray tracing).
Increases in clock speed have hit a wall with current silicon based semiconductors. Exotic semiconductors and incredible cooling systems aren't practical for the mass market.
I used to write code for an enterprise network switch platform and our C code base started being built with g++. The toolbox analogy is apt. Forget the object orientated fluff, just use C with the STL container library. You have an optimized, standard interface library into commonly used data structures.
SF Bay Area tax revenue has been increasing just fine: http://www.sfchronicle.com/business/networth/article/Bay-Area-property-tax-assessments-on-a-roll-8349188.php
Don't forget that under prop 13 the property tax of a unit is reassessed at market value when it exchanges hands or a brand new unit is sold. With the current housing boom(bubble) going incredibly strong in this part of the country tax revenue has been increasing significantly.
There's no excuse for SF's budget problems except for its own politicians. In SF there are homeless everywhere. Just like there was 20 years ago. Yet in 2016 the SF budget states $241 million was spent on the city's homeless problem. Nearly a quarter of a billion dollars! Currently, the city employs over 30,000 workers to serve a population of 830,000. In 1970 there wasn't even half that many city employees and the population was at 714,000. With what technology and automation have done in 45 years, why is there such a ridiculous ratio of city workers to city population? Especially glaring to the people who live there who still see trash in the streets and have to keep an eye out so they don't step on human feces walking down the sidewalk.
My question for you is - Why should the rest of California's home owners pay with the repeal of prop 13 because San Francisco(and its residents who keep voting for this type of government) is having budget problems running its own socialism experiment?
Bay Area property tax revenue has been going up quite well.
http://www.sfchronicle.com/business/networth/article/Bay-Area-property-tax-assessments-on-a-roll-834918
Don't forget that under prop 13 the property tax on a unit is reassessed based on the sale price when it exchanges hands or a newly built unit is sold. With the current housing boom/bubble going on that means quite a large increase in tax revenue.
There's really no excuse for the city of SF to have budget problems except for the greed of its own politicians. In San Francisco there are homeless everywhere. Just like 20 years ago. You have to be careful not to step on human feces in certain places. Yet the city's budget states that $241 million dollars was spent on its homeless problem in 2016. Nearly a quarter of a billion dollars! San Francisco employees 30,000 city workers in a city with 837,000 people. In 1970 the number of city workers was 15,000 serving a population of 714,000. The current ratio is outrageous, especially to people living in the city who wonder what's the result of having all these employees when the streets are filled with trash. The argument as to why SF city worker compensation is so high is that today's city employees are trained in specializations. That's a fair argument. Yet why does the city need twice as many employees for a population that's only 15% greater than it was over 45 years ago? When modern technology has brought more automation in that time and not less? Half of SF's budget goes to its employees.
My question for you is - why should the rest of California's home owners have to pay with the repeal of prop 13 because San Francisco decided(through its residents who keep voting for this type of government) to run its own socialism experiment?
Finally got around to reading Heinlein. The Moon is a Harsh Mistress is next.
Divestment doesn't do anything except put said stocks on sale for another buyer. If you want to hurt the business of fossil fuel companies then stop buying their products.
<quote><p>Why the fuck would any Linux developer want to do this? It's not as if Windows 10 offers any significant, or even real, architectural advantage, and it's not like Linux doesn't have plenty of its own development tools. So far as I can tell, Windows 10 has absolutely no developer advantages at all, and in fact, simply represents a pointless extra layer for any developer working on Linux.</p></quote>
Nothing significant? How about good GUI development tools. I write code for a Linux application written in C++. The best setup I've found is Visual Studio w/ WinGDB attached to gdb running the process in a Linux VM. XCode can remotely attach to gdb as well.
What's the best Linux solution for debugging? Emacs?
<quote>
<quote><p>I loved the book The Martian, which has a lot of technology in it (the movie was a bit dumbed down compared to the book, but not entirely).</p></quote>
<p>My only problem with "The Martian" is that the premise for him being marooned on Mars (at least in the film) is completely bogus. Mars has 1% of the atmospheric pressure of earth, there's absolutely no way that a dust storm could cause anything like the effects it had in the movie. It certainly could not lift rocks, never mind knocking over a rocket.</p></quote>
Yet the story acknowledges the very thin atmosphere when Watney removes the front nose cover of the Ares 4 MAV to shed weight and puts a tarp over the hole.
I thought this was an odd statement:
"While the P100D Ludicrous is obviously an expensive vehicle, we want to emphasize that every sale helps pay for the smaller and much more affordable Tesla Model 3 that is in development. Without customers willing to buy the expensive Model S and X, we would be unable to fund the smaller, more affordable Model 3 development."
https://www.tesla.com/blog/new-tesla-model-s-now-quickest-production-car-world
Given Tesla's history of missed dates and missed production numbers, should we be concerned about the Model 3 viability and timeliness given this statement?
Throwing an exception with a completely empty catch block.
if they manage to build a rocket that can cross the Pacific in 10 years. They're never leaving orbit.
You can compare pointer addresses in C. The signature uses void pointers so that any pointer type can be passed. In the function they are cast as a byte type so the arithmetic works(the third argument is the length in bytes). e.g.
void memmove(void * d, void * s, int len)
{
char * src = (char*) s;
char * dst = (char*) d;
if (src < dst)
for(int i = 0; i < len; ++i)
dst[i] = src[i];
else if (src > dst)
while(len--)
dst[len] = src[len];
}
I've been telecommuting for the past two years, for a virtual company, and I hope I never need to give it up.
There are some things I miss, in particular (a) my wife not needing to keep our kids somewhat quiet during school vacations, and (b) having a ready-made social life due to being cooped up with coworkers.
But after working out some of the kinks, and with a just a little extra self-discipline, it's so, so worth it.
Even if an employer needs to pay and $5k/year to cover telecommute-specific costs (such as decent video conference equipment, etc.), it seems it must be a win-win for just about everyone involved. (At least for software development jobs. Not sure about other kinds.)
$5k/year for telecommute costs? Maintaining a VPN and having decent conferencing equipment shouldn't cost that much. And if it does, the savings in office space(have you seen what SV office space costs?) more than makes up for it.
There's still no std::string split() method.
Not really. At this point Russia has the ability to deliver a crippling first strike on the entire west and they will do everything possible to maintain this position. You can think of the US as a toxic parasite nailed to a table. It can of course still spew forth toxines, when injured but there are so many antidotes to its products in place, it can be slowly killed without fear of retaliation. We can choke it off economically by trading without dollars, we are in absolute control of it militarily.
The US, as well as other countries, have second strike capability with its nuclear subs.
"The practical application of that is you could fly long distances over the Earth very, very quickly but also that it's very useful as an alternative to a rocket for putting satellites into space," Smart said.
You'd still need a rocket engine to get it up to speed to where a scramjet can start working, unless it was a hybrid design similar to how the SR71 worked, where at full speed most intake air bypassed the J-58 compressor and it operated closer to a ramjet.
Then the rocket would be needed again when reaching an altitude where there's not enough atmospheric oxygen to finally put the satellite into LEO. However, hopefully the craft will not have to carry nearly as much oxidizer to do it.
"(According to comments left at electrek.co, about the only way to fatally crash a Tesla appears to be driving one off a cliff at high speed.)"
I bet crashing it into a brick wall at high speed would be fatal.
Plenty of cars in that price range have "inherent safety" and would protect its occupants in a similar accident, even though they run on an internal combustion engine.
Is it that difficult to make a low-power 80x86 ISA chip to compete with ARM manufacturers? I know the legacy instruction decoding is always going to take space, but I thought at this point the transistor count compared to the rest of the chip was small. I figured Intel with their leading edge fabs would be able to pull it off.
Linus used gotos to a label at the end of some functions. It's a straightforward way to implement clean up that has to happen regardless if a failure occurs at some point in the function.