February 6, 2013
Much of what makes our modern technology work is invisible. Our cell phones, televisions, and computers receive images and sounds through the air. GPS talks to satellites and tells us where we are, and our printers whir into motion, no strings attached. The invisibility of the workings of technology makes it all a little mysterious; some people even find it scary; our ancestors would have called it “magic.”
January 22, 2013
Seeing a happy, healthy dog playing in his own yard without a tether and without constant supervision is a joy to a dog lover, and frequently leads to a friendly chat with that well-behaved dog’s owner. More often than not, the impressed observer learns that there is an underground pet fence installed around the yard’s perimeter and the dog has been trained to respect that boundary.