False memories and the many worlds of Hugh Everett

Anyone who has taken a course on quantum mechanics and learned the dominant Copenhagen interpretation of it has encountered the so-called measurement problem that says that systems can exist simultaneously in a superposition of mutually exclusive states until an actual measurement is made, at which point the superposition collapses in ways that are unknown to the observer and the system is found in just one of the possible states. What happened to all the other states? No one knows. They are assumed to just cease to exist. The most famous example of this is Schrodinger’s cat which, while still in the unopened box is both alive and dead, but when the box is opened is found either alive or dead.
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California vaccination rates soar

Mississippi usually ranks low in terms of public health measures while California ranks high. But when it comes to childhood vaccinations, that was reversed with resistance to childhood vaccination being high in California while vaccination rates have been highest in Mississippi. 99.7% of Mississippi kindergartners have had their shots, compared to a national average of 94.5% and the anti-vaxxers had taken aim at that state. The reason for the high rates is simple. Mississippi was enlightened enough to take a strong line over a long time when it comes to confronting the spread of infectious diseases, while California had a large number of well-to-do, educated people who bought into the anti-vaccinations scare stories and had the clout to exempt their children. The state had allowed parents to opt out under the most generous terms, such as having religious or philosophical objections
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Why was Gödel denied a job in Austria in 1938?

Mathematical logician Kurt Gödel was a prodigy who by 1931 at the age of just 25 had already published his landmark incompleteness theorems. Many people are familiar with Gödel’s name but have only a vague idea of why he is such an important figure. This brief biography gives a summary account of it.

In 1931, Gödel published results in formal logic that are considered landmarks of 20th-century mathematics. Gödel demonstrated, in effect, that hopes of reducing mathematics to an axiomatic system, as envisioned by mathematicians and philosophers at the turn of the 20th century, were in vain. His findings put an end to logicist efforts such as those of Bertrand Russell and Alfred North Whitehead and demonstrated the severe limitations of David Hilbert’s formalist program for arithmetic.
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Manipulating yellow traffic light times for profit

I have been a supporter of cameras at traffic lights to catch people who run red lights. It seemed like an impartial way to catch offenders who indulged in this dangerous practice because the camera did not care about your gender, age, ethnicity, class, type of car, or other factors that might cause a traffic police officer to decide whether to issue a ticket or not. Furthermore, it seems like a waste of time to have police hanging around at intersections doing something that a machine could do better when they could be doing more important things like preventing crime or catching criminals.
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Cycling around the world in 80 days

Ever since the Jules Verne classic novel Around the World in 80 Days and subsequent film celebrated the achievement of circling the globe, the idea has appealed to people trying to recreate a similar challenge in different forms. Mark Beaumont is planning to cycle around the globe in 80 days, which would be 43 days less than the current record. This requires him to cycle 240 miles a day, which he plans to do in four four-hour shifts per day.
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Fact and folklore about the deflection of light by the Sun

Most people are familiar with the dramatic story of how Albert Einstein’s theory of general relativity made a surprising prediction that was spectacularly confirmed and thus enabled his counter-intuitive idea to become the accepted view. The story goes that he predicted that the path of light would be bent by the presence of a strong gravitational field. Arthur Eddington then measured that bending during a solar eclipse and got a result that agreed with Einstein’s prediction, thus providing strong support for the revolutionary idea that space was curved by matter and that light followed that curved path. Part of the dramatic appeal of this story, as recounted in the folklore, is that Einstein’s prediction that light would be bent by the Sun seemed to be utterly novel and thus its confirmation carried much greater impact than it would have otherwise.
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The ‘hot hand’ theory makes a comeback

There is a strong belief among athletes and sports fans that sometimes athletes enter ‘the zone’, or have a ‘hot streak’ where it seems they can do no wrong or at least perform much better than they usually do and thus have a much greater chance of success at hitting the ball or shooting a basket than at other times. There is a kind of plausibility story built around this idea. When you achieve success, it makes you feel good and confident and that sense of assurance may lead to a greater focus and thus better performance whereas failure may lead to greater nervousness and second-guessing of oneself that could prove harmful in fast-moving actions sports.
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A novel lawsuit involving climate change

The difficulty with the climate change problem is that it is a long-term one and thus policy makers, who tend to be older people, may not view it with the same sense of urgency since the most adverse consequences will occur after they are dead. It is young people who will pay the price for my generation’s inaction. Hence I was intrigued by this court ruling that I missed when it was handed down on November 10th of last year. It should have got much wider publicity than it did.
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Coincidences are so common

I have written before about how common coincidences are and just yesterday I had another example. I have been retired for over a year and I had not spoken with my university’s computer security person for at least a year before I retired but after I wrote my post on Congress’s move to allow ISPs to sell our data without permission and how VPNs might thwart that, I emailed him to ask what kind of security the university’s VPN system that I use provided. I then got an email back giving a time when he would call to discuss this and, as he said, ‘other matters’.
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