Archive for August, 2009

Ambitious Fusion Technology Startup

August 9th, 2009

A new startup called General Fusion is attempting an ambitious project to build a fusion power plant.

It may seem implausible, but some top U.S. fusion experts say General Fusion’s approach, which is a variation on what the industry calls magnetized target fusion, is scientifically sound and could actually work. It’s a long shot, they say, but well worth a try.

[...]

The prototype reactor will be composed of a metal sphere about three meters in diameter containing a liquid mixture of lithium and lead. The liquid is spun to create a vortex inside the sphere that forms a vertical cavity in the middle. At this point, two donut-shaped plasma rings held together by self-generated magnetic fields, called spheromaks, are injected into the cavity from the top and bottom of the sphere and come together to create a target in the center. “Think about it as blowing smoke rings at each other,” says Doug Richardson, chief executive of General Fusion.

original source

Maybe nuclear fusion will be the next big thing that solves our energy problems. Energy from fusion has been the pipe dreams of nuclear physicists for decades, but no one have been able to develop a technique to control the voilent reaction. Looks like technology is catching up.

“I’m rooting for them,” says Ken Fowler, professor emeritus of nuclear engineering and plasma physics at the University of California, Berkeley, and a leading authority on fusion-reactor designs. He’s analyzed the approach and found no technical showstoppers. “Maybe these guys can do it. It’s really luck of the draw.”

Braess’s Paradox On The Road

August 8th, 2009

Interesting research that finds evidence of Braess’s paradox in greedy traffic route optimization:

Imagine two routes to a destination, a short but narrow bridge and a longer but wider highway. Let’s also imagine that the combined travel times of all the drivers is shortest if half take the bridge and half take the highway. But because each driver is selfishly trying to seek the shortest route for himself, this doesn’t happen. At first, everyone will go for the bridge because it’s shorter. But then, as the bridge becomes backed up, more drivers start taking the highway, until the congestion on the bridge starts to clear up. At that point more drivers go back to the bridge, which then becomes backed up again. Eventually, the traffic flow settles into what’s called the Nash equilibrium (named for the beautifully minded mathematician), in which each route takes the same amount of time. But in this equilibrium the travel time is actually longer than the average time it would take if half of the drivers took each route.

Very counterintuitive!

Telcos And Price Descrimination

August 7th, 2009

Monopolistic Telcos in Australia like Optus and Telstra charge enormous rates for their plans. A typical call is almost a dollar a minute in addition to a 30c “flag fall” connection fee. They do this because it allows them to use “caps” to give the perception of value.

Pay $50 for $500 dollars of value!

Bullshit. $50 will get you $50 of value, that’s the definition of value. Furthermore, telcos will charge these overpriced rates if a careless consumer goes over her cap. If you go over your cap,  you lose; be prepared to pay another couple hundred dollars on your next bill.  If you go under you lose the “value” you paid for but didn’t use. At best you can break even, and the odds are against you.

Here is a snapshot of Optus’ ridiculous pricing.

pricing

Ridiculous pricing structure, Aug 2009

For anyone who is too accustomed to this kind of pricing structure for mobiles to notice the peculiarity, imagine a grocery store who said,

Buy up to $200 worth of oranges for $10! <smallfont>Oranges are $5 each.</smallfont>

You rarely see this anywhere else but a mobile company.

A small player in the mobile market, Exetel has more realistic rates. The kind of prices that you would expect to see at a supermarket.

exThere, simple. You pay 25 cents per minute, no flag fall, reasonable data rates, no bullshit “value”. This is much better value than Optus prepaid rates (after you do the math).

Here is the surprise, ready? This service from Exetel uses Optus as the underlying carrier. That is to say, Exetel is an Optus mobile reseller! This is price discrimination.

A Microeconomics 101 Explanation

Under a typical demand and supply graph, the point at which [consumers] demand meets [telcos] supply sets the price and quantity sold. The utility (or value, or surplus, whatever you call it) for the consumer is the area above the price line(p0) and below the demand curve. This is because there are consumers who are willing to pay more than the market price for the service, so the difference between the price and the demand is excess value. The total value is the sum of all those differences. Similarly, the value to the supplier is the area below the price line and above the supply curve. Intuitively, the total utility is maximized at the price where demand meets supply.

surplusNotice that with demand and supply curves of similar elasticity (gradient), the consumer surplus and supplier surplus are roughly equal. However, suppliers (usually monopolistic ones) can absorb consumer surplus by selling services at a higher price to those willing to pay more.

image004By selling different quantities (u,v,w,x,y) of the same product at different prices (p,q,r,s,t), the supplier can eat into the consumer surplus to maximize it’s own profits.

Searching For The Solution

This discrimination only works if those willing to pay more cannot get a better deal elsewhere, and are forced to pay the higher price. Thus, this works better for telcos if there are fewer competitors.

The solution then is not just more competition, but more competition on price. Businesses set themselves a part product differentiation where they sell services that are slightly different from one another which allow them to avoid competing on price and instead compete on those little differences.

Competing on price is expensive to business, but consumers win. We consumers have been losing against telcos for too long. The only way to win is to make decisions based on price to encourage price competition. The rediculous price structures allow telcos to compete with product differentiation by offering slightly different plans while making it a non-trivial task for us to work out the real value. This has to stop. Think, what can we do?

Linux Needs More Polish

August 7th, 2009

The wonderful thing about Linux is that it has a philosophy of free software that’s followed religiously by it’s proponents. Linux evangelists have convinced enough volunteers and sponsors to create the most complex yet usable software ever. Ubuntu is the first and only Linux distribution that has been successful among average personal computer users, but it has a long way to go before it can compete with OS X and Windows. Ubuntu is where it is now because of great leadership, a focus on usability, and standardized features. It’s more polished and usable than other distributions.

A polished product will just work out of the box. A polished operating system won’t get in the way of your work, instead it will make  your work easier. A polished operating system will provide a consistent high standard of user experience through out.

Linux has a lot of functionality. I can do 99% of everything I want to and can on windows or OS X, but that 1% margin matters. Using it just doesn’t feel “right” sometimes. Why can’t my wireless card just work? Why is the UI so ugly? Compiz fusion attempts to make it look better, but at the cost of usability. The animations and glitches just gets in the way and provides no usability value. It does some things really well like having an apt package manager, while leaving out other areas that completely ruin the user experience.

Like any religion, followers will loose faith once they discover that it’s not all harps and clouds. The philosophy behind it satisfy the most devoted followers, but it won’t satisfy the masses. It needs the polish, it needs leadership, it needs standards. If something works on my computer, it should work on yours too.  The average user doesn’t want to spend hours trying to do something as simple as mounting a USB. Sure, a Linux guru can troubleshoot it in seconds, but the average user expects it to just work, and if it can’t do that, there are better operating systems that can. A couple hundred dollars on a first class operating system is a small price to pay for the hours saved configuring and trouble shooting a second class operating system.

The average user expects consistency. We need a standardized UI, a standard way of managing installed software, a standard video player to play videos. Ubuntu has done a good job of this. The average user expects things to work. The average user expects the kind of polished user experience from Windows and OS X. The average user expects these things because the competition has been able to deliver them. If linux wants a share of this demographic, it’s going to need more polish.

This post was inspired by Jeff Atwood’s post, Code: it’s trivial

How Do You Spend Your Day?

August 5th, 2009

The New York Times has a histogram of how different groups of people spend their time each day.

How Different Groups Spend Their Day

How Different Groups Spend Their Day

It’s amazing how much time we spend sleeping each day. The second most common activity at 3am is work, and surprisingly men and women spend about the same amount of time on the computer. Maybe the internet does have some real women!

This got me thinking about how I spend my day. Most people spend very little time on the computer, I spend a lot of time between 7pm and 10pm on the computer, in fact, there’s a 99 percent chance that I’ll be on the computer during those times! According to the graph, people don’t spend that much time socializing. I’m no socialite, but only 7% of people are socializing during dinner time.

I want a histogram of how I spend my day to see how consistent my sleep and eating habits are. If someone came up with an easy way to record your own activities and puts them on a graph like this, it would help health and self improvement conscious people to find and correct bad habits.

Juice Should Come In A Can

August 4th, 2009

I drink too much coke. Coke is convenient when it’s in a can. It’s small enough to hold in your hand, and there’s no annoying bottle cap to deal with. Caps are annoying when you plan to finish the drink in one sitting and  you have to hold it with your other hand. Caps are annoying when you’re sitting at your table and you always seem to knock it on the floor. Cans are conveniently cap free.

Juice is more healthful than coke, and it costs about the same amount, yet it’s not as convenient to drink. I want to see more juice in a can. I want to be able to buy a 24 pack of juice cans at the supermarket. I want to be able to sit at my desk with a can of grape juice.

Grape_Juice_Drink_250ml_Plastic_Can_OEM_China seems to have them everywhere, why can’t we?

[video] Seth Godin: How Not To Be Mediocre

August 2nd, 2009

Video of guru marketer Seth Godin talking about why you should market to and build things for niches rather than a mass audience.

To summarize,

There is too much advertising clutter in the world now, and to get through this clutter, you have to build something different for a smaller more specialized audience. Building things for the masses leads to creating mediocre products that the average person would want. This just adds to the clutter, instead you should build products for niches and get noticed. That way people who notice you tell others and do the marketing for you. Ideas that spread win. Good ideas that connect people spreads.

The summary just doesn’t do it justice. Here is the video. Anyone who is interested in entrepreneurism or will be involved in the building or marketing of a product needs to watch this.

The Best Place To Shop For Broadband Internet In Australia

August 1st, 2009

If you want broadband internet at home, anyone with a clue about broadband would tell you that two things really matter. The speed and the price. That’s exactly what whirlpool.net.au allows you to compare.

Of course you have to know a little bit of broadband jargon before using it, but that’s no problem, just drop a post on the forums section devoted to choosing an ISP and ask the community to help you. The forums is also a great place to measure the quality of service of these ISPs. It will be inversely proportional to the number of complaint topics.