Why I cannot resist surfing the web

Apparently, scientists are doing research into why I spend so much time surfing the web (and indeed why you are reading this). New information, or information that needs to be analyzed gives us a high. Wall Street Journal has an article about this research:

Dr. Biederman first showed a collection of photographs to volunteer test subjects, and found they said they preferred certain kinds of pictures (monkeys in a tree or a group of houses along a river) over others (an empty parking lot or a pile of old paint cans).

The preferred pictures had certain common features, including a good vantage on a landscape and an element of mystery. In one way or another, said Dr. Biederman, they all presented new information that somehow needed to be interpreted.

When he hooked up volunteers to a brain-scanning machine, the preferred pictures were shown to generate much more brain activity than the unpreferred shots. While researchers don’t yet know what exactly these brain scans signify, a likely possibility involves increased production of the brain’s pleasure-enhancing neurotransmitters called opioids.

In other words, coming across what Dr. Biederman calls new and richly interpretable information triggers a chemical reaction that makes us feel good, which in turn causes us to seek out even more of it. The reverse is true as well: We want to avoid not getting those hits because, for one, we are so averse to boredom.

It is something we seem hard-wired to do, says Dr. Biederman. When you find new information, you get an opioid hit, and we are junkies for those. You might call us ‘infovores.’ ”

For most of human history, there was little chance of overdosing on information, because any one day in the Olduvai Gorge was a lot like any other. Today, though, we can find in the course of a few hours online more information than our ancient ancestors could in their whole lives.

Apparently, this is hardwired into our brain due to evolutionary forces. Just like cats and laser pointers:

Many cat owners know that the lasers are the easiest way to keep the pet amused. The cats will ceaselessly, maniacally chase it as it’s beamed about the room, literally climbing the walls to capture what they surely regard as some form of ultimate prey.

Obviously, cats are hard-wired to hunt down small, bright objects, like birds. But since nothing in nature is as bright as a laser, they are powerless to resist its charms.

[…]

Watching a cat play with a laser, you realize the cat never learns there is no real “prey” there. You can show the cat the pointer, clicking it off and on, and it will remain transfixed.

But we can hope that:

People presumably are smarter than cats, and as we become more familiar with the Web and its torrent of information, maybe we’ll do a better job learning what is useful and what isn’t.

Then again, maybe not.

See full article.

Hackers can hack your pacemaker!

Up till now, the worst that computer hackers could do was steal your passwords, and maybe your money from your bank accounts. Now, comes evidence, that it is theoretically possible for a hacker to wirelessly hack into the pacemaker that a is installed in a person’s chest and modify its settings – and actually kill the person.

See this post for:

To the long list of objects vulnerable to attack by computer hackers, add the human heart.

The threat seems largely theoretical. But a team of computer security researchers plans to report Wednesday that it had been able to gain wireless access to a combination heart defibrillator and pacemaker.

They were able to reprogram it to shut down and to deliver jolts of electricity that would potentially be fatal — if the device had been in a person. In this case, the researcher were hacking into a device in a laboratory.

Gives a new meaning to the phrase “he is in the hospital with a virus infection”.

See full article. (via slashdot.)

Student families in school

My kids’ school, Vidya Valley, has just introduced something they are calling “Tutor groups” in school. A tutor group is a group of 15 to 20 students consisting of a few students from each class from 5th to 10th standard (aka grade). Each tutor group is assigned one teacher (“Guardian Tutor”) whose job it is to ensure the full welfare of the children in this group. Here, “full welfare” specifically refers to non-academic issues, like mental and physical welfare (for example to help with bullying, truancy issues, or special medical attention).

Each student stays in the same tutor group for all the 5 years, and the guardian tutor of the group remains the same throughout. Each year, the students of Std. 10 will obviously pass out and leave the group. At this time, new students from Std. 5 will enter the group. This whole set-up creates a sort of a family unit, where the guardian tutor becomes the surrogate parent, and the other students become surrogate siblings.

The tutor group meets every day for a little time – the school time-tables have been adjusted to allow for this. In addition, they meet once every two weeks for a longer period. These meetings have no agenda. Just hang out and bond and behave like a family.

See this pdf for a more detailed description of the guardian tutor system in Vidya Valley.

It sounds like a very interesting idea, and I have not really heard of anything like this being used in Pune schools (but I could be mistaken). In any case, seems like a neat thing to have. They have introduced it just a few months ago, so it will be interesting to see how it works out in real life.