The 3D printing phenomenon

3D printing is the hot new thing. I have not used one myself but a colleague of mine says that the cost of such things is dropping rapidly (you can now get one for less than $1000) and he has several in his lab because the cost of repairing the older, more expensive ones is now often greater than the cost of buying a newer and better one. He says that they come in extremely useful for creating customized items for his research. [Read more…]

The intriguing world of visual special effects

I have not seen the film Life of Pi and am probably not going to. I read Yann Martel’s book some years ago and what I liked most about it were the opening chapters of the boy Pi simultaneously following the religions of Christianity, Hinduism, and Islam, unbeknownst to his parents or to the clerics of the three religions, each of whom thought he was a devout follower of only their faith. Once the boy started on his ill-fated journey across the ocean, I lost interest while the film seems to have that as its main focus. [Read more…]

The mystery of Stonehenge

StonehengeThe Stonehenge site in England is a popular tourist attraction, especially at the time of the summer solstice when mystical rites are conducted by druids. The collection of massive stones was arranged in a circle some time between 3,000 BCE – 2,000 BCE but the origins and purpose are unknown and have spawned many theories as to what was the point of it all. After all, it must been incredibly hard to make it and so required a strong motive. [Read more…]

How false memories can get created

I remember the first time that I realized that I had a false memory. It concerned an event that I remembered from when I was about six years old. There was a fire a few houses away and my father decided to pack us in the car and drive us away for safety in case it should spread and engulf our home. When I asked my mother and older sister many years later about this incident, they both said that such a sequence never happened. But the images are still quite strong in my mind. [Read more…]

Demonstrations of Google’s self-driving car

Self-driving cars have clearly reached a level where they are no longer the stuff of science fiction but are now a reality, and we should soon be seeing them on streets everywhere. Once people get over the spooky aspect of it, we can expect to see an explosion in their numbers. Watch this demonstration of such a car driving itself to see how it can be a real boon to some people. [Read more…]

Academics behaving badly

Academics tend to be respected because of their reputations for having expert knowledge and some level of objectivity. As a result they are often sought as endorsers for various positions. I have written many times before of the danger that exists when that esteem is abused. This danger seems to be most present in the field of economics and medicine, not coincidentally because there is a lot of money at stake there. [Read more…]

Myths and presumptions about obesity

People who are perceived to be overweight according to the norms set by society have a tough time. We live in a media-saturated world in which thinness is not only treated as a desirable marker of good looks and good health, it is also seen as somehow virtuous and hence people who are above the norms in weight are seen as being somehow morally weak and lacking in will power to control how much they eat. This is despite the fact that it is not at all clear what a person’s optimum weight should be, how much it is affected by distribution and body shape and age, what causes some to be heavier than others, and even whether being overweight is as extremely unhealthy as it is sometimes made out to be. [Read more…]