Author Archives: alistair

Referees: They’re not perfect

Any sports fan knows that referees are as human as the rest of us – mistakes do creep in.

However, I recently read this short article citing studies that show ref’s also make more subtle, but systematic mistakes.

Home Crowd Advantage

This article discusses a study of 3500 Bundesliga matches that found measurable bias in favor of the home team:

  • Interestingly the bias was more significant when there was no running track around the field – in other words when the fans were closer to the ref.
  • Refs were shown footage of tackles with the sound on and the sound off. Those watching with the sound on ruled in favor of the home team 15.5% more often!

The Team in Red

In the past I have read that football teams wearing red win slightly more matches. This article discusses a study of tae kwon do referees found that they favor the fighter in red.

In tae kwon do one fighter has a red helmet and one has a blue helmet.

In the experiment 42 experienced refs were shown videos of sparring rounds.

  • The red fighters were awarded on average 13% more points
  • The videos were then digitally altered to switch the color of the helmets. Suddenly the points awarded flipped over with the new reds getting a bigger share.

Ninja bugs

National Geographic has a photo gallery showing off some of nature’s clever disguises. Well worth a look.

There are two bugs in this picture. Seriously.

ninja-bugs-1

“Leaf knockoffs down to brown spots and notched edges, two Mimetica katydids with twiglike legs can rest or feed without drawing attention”.

In case you’re still not sure, here they are:

ninja-bugs-2

The gallery is well worth looking at. Below are a few more of by favorites.

Not a snake…

ninja-bug-3

Finally, this is a great mantis. Nature is awesome.

ninja-bug-4

Hout Bay’s Sentinel mountain sold for R10m

Hout Bay's Sentinel has been soldAmazingly it seems that someone has managed to pick up a stunning mountain(!!) in Hout Bay for R10 million on auction. (see article on IOL).

The mountain was bought in a private auction for “about R10 million” after only 14 bids were received.

Why so cheap? Well it seems that there is a lot more to the story:

  • The residents in the area are militantly against any development. They broke up the original auction and were only dispersed when police began using rubber bullets on them.
  • SANParks is also after the site. Apparently (see article) the Parks Board have managed to grab all of the land around the sold plot – it is effectively cut off. I doubt that they will allow access for development.

In fact, there are suspicions that the mountain hasn’t been sold at all.

If Parks Board attempt to expropriate the land then they will have to pay fair market value for it (they’ve offered R500,000). It has been suggested that the auction sale could be a ploy to make the ‘fair market value’ seem higher.

Interesting stuff.

How do wooden buildings hundreds of years old still stand

A Japanese Pagoda

A pagoda is a tall and often very old structure built entirely out of wood.

They are common in Japan and some are extremely old. For example “Horyuji pagoda in Nara was built in 607 and is thought to be the oldest multi-storey wooden structure in the world.”

The Economist has an article explaining just how these structures have managed to survive hundreds of years of typhoons and earthquakes.

Summary:

  • To withstand very heavy rains the eaves are extended way beyond the building’s width – about 70% beyond!
    • This prevents rain water from weakening the foundations
  • The floors are not actually attached. They are simply stacked on top of eachother and held down by the weight of the heavy tiles on the roof
    • This allows each floor to move during an earthquake without breaking up
  • There is a central pillar known as a shinbashira that (normally) rests on the ground
    • This pillar prevents the shifting floors from sliding off eachother and also transmits the energy into the ground.

It’s a fascinating article and a good example of why The Economist is so great.

Zuma’s empty election promises causing unrest

AWB was better than ANC poster

The Economist has an article on Zuma, South Africa, and the recession.

Summary:

  • The current recession means that many of Zuma’s grand campaign promises are falling aside
  • This is causing serious problems among the impatient poor masses
  • It is also causing problems among his powerful left leaning COSATU and communist allies
  • The fact that Tito Mboweni is leaving (suspiciously timed) suggests that perhaps Zuma is giving in to pressure
  • It will be crucial to see if Zuma is able to “hold his left-wing allies in check” during the recession

In short, my take is this:

South Africa is full of poor people (40% of our population is below the poverty line).

These poor masses are impatient to improve their lot. They also believe that this is their right and will happen fast.

  • Many believe their current situation to be the direct result of past injustice
  • They have all been promised quick and drastic change by the ANC

With good governance and hard work their lot should improve – but only over time.

This is a problem because:

  • We do not have good governance. Especially at the extremely important municipal level we often have shockingly bad governance
  • The ANC promises unrealistic and quick results. Zuma made lots of mad promises during the campaign which are now falling by the wayside

So we have an already impatient, poor and jobless population being continually disappointed you surely have a recipe for unrest and possible disaster?

Readability bookmarklet

web-content-small These days reading content online can quite a pain. The content that we want is lost in an ocean of junk (see image).

On top of that every site has different text styling, text sizing, etc, etc.

I recently came across a great solution: Readability.

Readability is a ‘bookmarklet’ that will update any site you’re looking at to be more readable.

This is how it works:

  1. You choose some preferences up front (i.e. font size and type)
  2. Drag the link provided onto your browser links bar
  3. When you’re reading a site with a lot of gunk hit the bookmark
  4. Readability will update the site to make it more readable

Basically the program will go through the page and extract the ‘content’ and then show only that content according to your formatting preferences.

In the example image here Readability would find the blue block and then show then content of that block according to your preferences.

Because the program must figure out which content is relevant this process doesn’t work every time. Some sites are not compatible.

That said, I find Readability very useful and often make use of it.

Lost wallets with baby photos more likely to be returned

This article reports on an experiment investigating the impact of various photos in lost wallets.

240 wallets were distributed on the streets (in Britain). Each wallet had the same random items in it, but no cash.

The only difference was a single photo included:

  • Photo of a baby: 88% of wallets returned
  • Photo of a puppy: 53% of wallets returned
  • Photo of a family: 48% of wallets returned
  • Photo of an elderly couple: 28% of wallets returned
  • Card showing recent charity giving: 20% of wallets returned
  • Control with no extra items: 15% of wallets returned

Even in such a small experiment the baby photo obviously had a significant emotional impact on those who found the wallets.

Irrational human nature at work again.

Google operating system – coming soon

Google has just announced that they are developing an operating system for release in 2010. When it comes to Google nothing surprises me anymore!

The Idea

The idea is to create a simple, fast and free operating system for users who do everything online.

Windows is bulky, complex and fragile because it was developed for a world where each computer must bundle everything the user needs.

The Google OS is being designed for a world where users do everything online. By removing the bulk and complexity you get an operating system that is very fast, secure and stable.

Why it will work

It is important to note that the Google OS is currently targeted at netbooks (tiny, cheap, portable laptops). This is the perfect market for an OS like Google’s and it should pave the way.

There are still plenty of reasons to think that Google’s operating system is stupid.

1. We need Word and Excel

Meet Google Docs. Google and others have developed replacements for the essential desktop tools. Word, Excel, calendar, email, Powerpoint – they’ve all got working online replacements. It’s no coincidence that Google just brought Google Apps out of beta.

I’m even writing this text online – not in Word!

2. What if I’m offline?

Even in an increasingly wired world we are sometimes going to be offline. What then?

Meet Google Gears. Not many people know it, but Google has produced software that allows web applications to be used even when offline! Gears is still in it’s infancy, but it when applied correctly it works.

3. Net speeds are increasing all the time

To really work we need bandwidth and lots of it. Luckily that is happening anyway (although not fast enough in South Africa)

Why are they doing this?

Google is releasing the operating system for free and open source. They’re doing us a huge favour for nothing! Why?

Google needs us all to be online. They want a world where everyone does everything online where they dominate. Fine by me.

Incredible air crash survival story

In the wake of the recent miracle survival in the Yemenia Flight 626 crash I came across this even more amazing crash survival.

Summary:

  • In 1971 Juliane Köpcke was in a plane that broke apart 3km above the Amazon jungle
  • She found herself in free fall while still strapped into a row of seats – she remembers seeing the jungle spinning below her
  • She landed in thick jungle and lost consciousness
  • She woke up the next morning with cuts, concussion and a broken collarbone as her only injuries
  • She knew that her best hope was to follow a river downstream which she did for 10 days despite her injuries and having almost no food
  • Eventually she was found and rescued by Peruvian loggers

That’s pretty amazing stuff!