The new iPhone announced yesterday apparently uses some aspects of facial recognition technology, and Edward Snowden says that it is almost certainly going to be abused. China is forging ahead with facial recognition with estimates of up to a billion people’s faces being entered into databases that enable them to be instantly recognized. The applications made possible by this are vast but the privacy implications are also disturbing.
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The TV images we saw of the Apollo astronauts on the moon had a ghostly, grainy look. That poor quality lent support to the beliefs of some people that the moon landings were faked though the reasoning escapes me. If the video was filmed on a secret Hollywood soundstage by Stanley Kubrick, as some allege, then surely NASA could have shelled out a few extra bucks to make a better quality product? (I never quite understood why people would believe something so bizarre. Why would NASA and the top people in the US government cook up such a story?)
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I recently had two separate interesting discussions with some other expatriate Sri Lankan friends who did not know each other. Each independently recounted their experiences with what is called a ‘light reader’ in Sri Lanka or a psychic or a medium in the US. They both talked about the same person named Hendo Hamy who lived in a village. People would go to him with various problems and he would be able to deduce why they had come to see him, what the problem was, and the resolution of the problem. Both were highly impressed by his abilities.
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The ocean off the southern coast of Sri Lanka sees regular visits of large pods of sperm whales and orcas (killer whales) sometimes numbering as many as 350. This attracts both tourists and marine biologists who study these huge animals. Sperm whales eat a diet that consists mostly of squid while the orcas are meat eaters that will kill and eat sperm whales if they can.
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Marcus Ranum sent along this amusing video that describes the napkin ring paradox. Basically it says that if you take any two solid spheres, however much they differ in size, and if you then remove a cylinder of material from each sphere, with the cylinder passing symmetrically through the center of the sphere such that the heights of the remaining solids (which look like napkin rings) are the same, then the volume of the two rings are identical.
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I am constantly impressed by the imagination of people who dream up new sporting contests. For example, here is one event from the 2017 Marblelympics, where teams of marbles compete with each other. In this exciting event, the marbles travel on tracks that go underwater.

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