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Comment Re:MPG testing - just to add (Score 1) 238

L/100km might contain the same information, but using distance as the domain is preferred. This is far more useful as people don't drive to burn fuel, they drive to travel. Distance is the important variable so fuel mileage should be with respect to distance. It makes comparing given fuel economy ratings easier as it better correlates with the amount of fuel you will use / cost of driving.

For example, consider the following fuel economy ratings: 4L/100km, 6L/100km, and 8L/100km. For a given distance, it is obvious that the most fuel efficient vehicle will be 1/2 the cost of the least efficient vehicle. The cost of third vehicle being is the average of the two other vehicles - or in the middle.

Now in mpg, those numbers are: 58.8mpg, 39.4mpg, 29.4mpg. Notice the 39.4mpg vehicle will cost the average of the 58.8mpg and 29.4mpg vehicles - but this is not apparent from looking at the numbers. It is because the numbers are represented using the wrong domain. Sure the information is there, it just is not represented in the most useful format.

Comment Re:Net energy? (Score 1) 580

Everyone seems to have forgotten about the other pollution that comes from burning petrol. I live next to a main road and the soot/dust is horrendous.

Most of that pollution would not occur if a synthesized fuel like this one was used. It should burn cleaner as it will have no contaminates. The big offenders creating soot/dust are the big trucks burning diesel and lacking proper catalytic converters. A modern car using this fuel should be fine - much like a car burning propane or natural gas.

Comment Re:MS is not even in the game... yet (Score 5, Informative) 417

I've been a .NET developer for 16 years

You sure? The initial release was on Feburary 13, 2002 - 10 years ago. Windows 95 was release 17 years ago and it could never even run .NET. The first version of Windows that could run .NET was Windows 98 - released 14 years ago. And I doubt that they had .NET ready for that initial version - doubt they even had an internal alpha version.

Comment Re:Fuel Saving (Score 1) 205

Because it would take longer so the airline would not be able to charge as much for tickets. Also, the crew would have to be paid for more hours for each flight. Maintenance would also cost more per flight as each flight would involve logging more air time. And I would feel bad for the air traffic controllers - their job would get significantly more difficult.

Comment Re:There's nothing Darwin about it. (Score 1) 992

A car going past you at 120mph is not going to give you nearly as much turbulence as overtaking a truck doing 60mph.

Yes, but you are expecting, and prepared for the turbulence of the truck. Many drivers don't deal well with surprises so a car overtaking them at 120mph, combined with the resulting turbulence, could cause problems. But you also have to remember that this is Texas where lots of people drive 1 tonne trucks. Those trucks have power and, considering how the drivers tend to have more money then brains*, will likely be the vehicles travelling at 120.

* - In my area, the young male drivers working in the oil field tend to have the big trucks which are driven like sports cars. Those who actually require a large truck tend to drive them intelligently.

But despite all of this, according to statistics from the autobahn the number of vehicle collisions is not determined by the speed limit. There are idiots on the road regardless. What does change is the number of fatalities as when the speed limit is increased the crashes are more likely to be fatal.

Comment Re:The TSA needs to be stopped (Score 2) 427

Here in North Carolina you can be stopped at a "license check" roadblock.

In Canada, and I would assume most states, you only have to provide your drivers license if the officer has sufficient grounds to request it. For example, a driving infraction. Police are free to request it but you do not have to humour their request. As it turns out, most people just hand over their drivers license.

Had a friend's father that was a defence lawyer in a small town (~5000). The police hated him - he always defended the people they arrested. That and he would never let the police overstep their authority. I recall them asking for a drivers license at a random stop - his response, no. The officer asked again several times implying that there would be trouble if he did not comply. His response, no - and that's how it ended.

I guess I'm saying people should read their local laws to see how they are affected. And remember, police do not have to tell the truth so do not automatically trust them. Police act on their own self interest, just like everyone else. They are not always on your side.

Comment Re:Why is Linux's SSD performance so terrible? (Score 1, Redundant) 130

Hope you mean TRIM and not defragmenting, which occurs when a file is deleted on an SSD, not when one is written.

No, TRIM is not defragmenting. TRIM only occurs on SSD and is a result of how FLASH has to be written/erased.

Traditional storage devices have storage elements with only two states - 1 or 0. These elements are then written to and read by the OS. SSDs are different as their storage elements have the same two states - 1 or 0, but also have an "empty" flag. You see, to write to a storage element that is not empty requires a rather lengthy erase procedure to be performed before the write. So to speed things up, SSDs maintain an "empty" status.

But how does an SSD know when a storage element is empty? When a file is deleted all that happens is the FAT table is changed - the actual data does not get deleted. Over time, all available blocks in an SSD get marked as "not-empty" and that lengthy erase procedure is required all the time. This is where TRIM comes in, it allows for the OS to give the SSD hints by telling it certain blocks are in fact empty. The SSD can then pre-erase these blocks to ensure speedy future write operations.

So that is TRIM - defragmenting is something else entirely. Look it up, it's basic stuff. But because SSDs do not offer truly random access, there is an advantage in having the file system defragmented. How much of an advantage is what I would like to know. If I had to guess I would say minimal.

Comment Re:Why is Linux's SSD performance so terrible? (Score 3, Interesting) 130

I would guess it is because OS X defragments the drive as it is being written. The overhead is largely not noticed when writing to a traditional hard drive while. Due to SSDs greater speed, it will make it appear that OS X has performance issues. The thing about performing inline defragmentation is it improves speed as the computer ages and as the HD begins to fill. Because all of the benchmarks were performed with fresh systems, the benefits of a defragmented drive would not be noticed.

The question I have is with the low seek times of SSDs, is there still a need to defragment drives? Probably, but to what degree as it surely is not as important as when one is using a traditional hard drive.

Comment Re:Mounting evidence - of hype. (Score 1) 335

Not every American beer is Budweiser, although even that is 5% so, yes, you're still ignorant.

Careful what you say. I don't know how it's done down under, but I'll leave you with this tidbit of info:

In the States alcohol content is measured by weight as opposed to volume. So a %4 beer in the states would be a %3.2 beer in Canada

Comment Re:Mounting evidence - of hype. (Score 1) 335

I know at least one person to whom several beers is as intoxicating as a cup of coffee. Are you saying this person is physically as intoxicated as anyone else who drinks that much, or legally intoxicated as much?

Wow, you are not just talking about two different drugs, but two drugs that are in completely different families. One is a stimulant and one is a depressant. How on earth can you compare them to each other?

Now in regards to your question, the answer is both. Humans differ greatly from one another but, on average, reaction time correlates to blood alcohol content. Tolerance is not part of the equation. We are talking about how a chemical effects signals that propagate through the brain. It's all chemistry - no amount of tolerance can change that. Do a search on scholar.google.com if you don't believe me. I wasn't able to find much with regards to tolerance but those studies which correlate reaction time to blood alcohol content generally result in findings that leave no room for outside factors (like tolerance).

Comment Re:Mounting evidence - of hype. (Score 4, Insightful) 335

how accustomed to the drug are they

You're so very wrong - at least in regards to alcohol. It is true that people can become accustomed to alcohol but they only appear sober. Their reaction times will be just as bad as someone who rarely drinks. This is why drinking and driving is so dangerous - those who do it really believe it does not impact their driving. And they are right, so long as nothing out of the ordinary happens. The problem is it severely limits what one perceives and how one reacts in an emergency situation.

Try having a few beer and then playing your favourite fps. Think of it as a science experiment - and a good excuse to have a few beer. Now compare your scores with and without alcohol and report your findings...

Comment Re:Money for nothing ...... (Score 0) 331

It's not for nothing. Stupid and greedy? Yes, but not for nothing.

By unlisting a subscriber they are incurring the opportunity cost of selling that subscriber's information. Yes it sounds stupid and only an economist would understand, but bean counters will take this into account. What they don't take into account is the cost of pissing off a large part of your customer base. I suppose with everyone signed up with long term contracts they don't have to worry able a mass exodus of customers.

Comment Re:not unique (Score 2) 362

There were plenty of tablets out before the iPad - I don't think anyone is contesting this fact. Apple is suing Samsung for creating products that are so similar to those made by Apple that a large percentage of customers can not tell them apart.

In regards to the Touch Book, it differs from an iPad in many ways. From looking at the photos, it appears to be designed for use with a landscape orientation. It lacks a home button centred on the bottom border. The screen is inset from the border where the iPad has a flat seamless surface. Then there is the software that is obviously very different in both appearance and function. Do I have to mention the keyboard? There is no way this invalidates the Apple design patents. Despite what people here like to claim, the patent is more specific then a rectangle with rounded corners.

All of these patents are just plain stupid - but they serve a purpose. A company must be able to protect their designs from those who would copy them. Without these protections there would be far less innovation. With regards to Samsung, I don't feel sorry for them. Plenty of great tablet designs have come out that are not copies of an iPad. Microsoft has their new tablet and HP had (unfortunately, past tense) their WebOS tablet. Blackberry makes a non-infringing tablet as do many manufacturers of Android based tablets. It is easy to not copy Apple, I don't see why Samsung went out of their way to be an Apple clone.

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