Great diving performance in Tokyo Olympics

Diving, like gymnastics, involves a lot of acrobatics in the air and it takes place too quickly for me to be able to judge it in real time, which tells you something about how difficult it must be to judge the event. The only indicator I have for how good it is at the very end. In the case of gymnastics, it is the landing. In the case of diving, it is how small a splash the diver makes upon entry into the water. In the Tokyo Olympics Chinese diver Quan Hongchan broke all manner of records with her gold-medal winning performance. Even an ignorant observer like me could tell that she was spectacular.


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The walls are closing in on vaccine and mask deniers

We are now in the third, fourth, or fifth wave of the pandemic in the US, depending on who’s counting. What is undeniable is that following an average low of around 80,000 weekly cases on June 22, we have now reached about 640,000 cases, an eightfold increase. Death rates reached a low of 1,500 on July 5th and have started rising since then, following the expected pattern of death rates lagging infection rates by about two weeks. Almost all this rise is among the unvaccinated and these people tend to be concentrated in places where there is a high level of vaccine hesitancy and outright resistance, mostly in Republican-dominated areas. But there are encouraging signs that those people who have been vigorously campaigning against vaccines and masks and other measures to combat the pandemic are losing the battle.
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Long haired sprinters

I usually only watch the track events at the Olympics and that too only after it is over. I was watching the finals of the women’s 100m and noticed that the top three medal winners (all from Jamaica) all had long ponytails, with the silver medalist’s hair an eye-catching yellow and red.

I wondered whether having long hair might slow them down just a fraction due to increased wind resistance. It is true that resistance is not as significant as in swimming where everyone wears caps. But in an event where one-hundredth of a second can make all the difference, wouldn’t sprinters want to minimize drag as much as possible?

Since almost all the eight finalists had long or longish hair, I have to assume that they have concluded that it does not matter and that does seem to be the case.

Flowing locks increase air resistance insofar as they boost a runner’s surface area. More hair creates more opportunities for friction between the runner and the air, so a full-headed athlete would have to work harder to maintain the same speed as a bald one. And since Olympic sprinters are already close to maxing out in terms of effort, any situation that requires them to do more work has the potential to extend their times.

But hair is pretty light, so athletes know it’s the styling, not the quantity, of their tresses that could dash their hopes. Hairdos like ponytails, braids, and or buns, which comb the mane behind the neck, have little effect on overall surface area, while hair that sticks out from the sides of the head increase it (and might also whip into the runner’s eyes).

All the sprinters had their hair in ponytails that stayed behind their backs and did not swish back and forth.

The link between climate change and extreme weather becomes hard to ignore

We know that the relationship between climate change and weather is a statistical one, in that rising global temperatures will cause more extreme weather patterns to occur more frequently. But that causal arrow goes just one way, in that we cannot take any particular weather event, however extreme, and unequivocally blame it on climate change. This puts the scientifically minded at a disadvantage when arguing with climate change skeptics who have no compunction about taking isolated anomalous events (such as the recent cold snap in Texas) and using it to proclaim that global warming is not occurring or is a hoax. Most of us refrain from fighting anecdotes with anecdotes.
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Reversals of scientific conclusions are not unusual

I have started wearing a mask again when I go to the bridge center even though everyone has to prove that they are vaccinated before they are allowed to enter. The reason is the revised CDC guidelines that once again recommend indoor masking, especially in areas of high covid-19 incidence, because of the surge in cases due to the Delta variant.

There have been some criticisms of the CDC reversing its policy on masks. While I think that it can be faulted for less than clear messaging, I think the more fundamental problem is one over which they have no control and that is that people have a poor idea of how the scientific process works. People tend to think that scientific conclusions are fixed once and for all once they are arrived at and get unsettled when ‘science’ says one thing at one time and another thing later. But as I argue in my book The Great Paradox of Science, reversals of scientific consensus judgments happen all the time. It is just that it usually happens without the full glare of the media spotlight them so people are not aware of how common they are. In the case of covid-19, we are all getting to witness in real time that scientific conclusions are always provisional and that the scientific community can change its view when the situation changes and new evidence emerges. That is how it should be.
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What can happen when you ‘do your own research’

Anti-vaxxers encourage people to do their own research on the vaccines. Doing research on anything is a good idea but you have to know how to do research. This is particularly important in the internet and social media age where one is flooded with information and most of it is of highly dubious quality. It is not simply a question of how many times a particular point of view one comes across or whether one personally knows the sender of the information. Those are irrelevant. One has to learn how to evaluate the credibility of sources and be aware of how risks should be evaluated.

From friends and relatives I get forwarded articles that have been circulating on the internet, asking for my opinion. If the article is unsigned or not from credible institutions or has no links to original sources, then I deeply discount what it says. The anti-vaxxers have been flooding the zone with misinformation and thus their urging people to ‘do your own research’ without telling them how best to do it is somewhat disingenuous since it will likely result in people arriving at faulty conclusions.
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Get the damn vaccine before it is too late!

It seems like some people are realizing that they should have got vaccinated but it is too late. Some of these people are young who were under the misapprehension that their youth provided protection.

At least 99% of those in the US who died of coronavirus in the last six months had not been vaccinated, Dr Rochelle Walensky, director of the Centers for Disease Control and Prevention (CDC), has said.
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In places such as Alabama, only 33% of people who can receive the vaccine had been fully vaccinated, as of 20 July.

On Monday, a doctor in a Birmingham, Alabama, hospital, Brytney Cobia, said that all but one of her Covid patients at Grandview medical center didn’t receive the vaccine, with the one who had expected to make a full recovery after receiving oxygen, she told the Birmingham News. Several others are dying.
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Are Republican leaders and Fox News finally accepting the need for vaccinations?

With the rapid spread of the Delta variant of covid-19 that now makes up 83% of the cases, Republican opposition to the vaccines may be wavering. House minority leader Steve Scalise, who had refused to get the vaccine before, has just announced that he got the first shot.

House Minority Whip Steve Scalise (R-La.) got his first dose of the Pfizer coronavirus vaccine Sunday, calling it “safe and effective,” Nola reports.

Driving the news: Scalise said that his decision to get vaccinated was driven by the spread of the Delta variant, which he noted was “aggressive” as well as a recent spike in case numbers.
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Why it matters: A number of public opinion polls have shown Republicans have been among the most vaccine-hesitant group in the country, and some have urged public officials to more publicly encourage constituents to get inoculated.

Fox News has been one of the biggest purveyors of misinformation about the extent and threat of covid-19 and has played a central role in increasing vaccine skepticism. This is appallingly irresponsible behavior given the risk to people’s lives. But it appears that reality may be finally sinking in with at least some of its show hosts.
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One Republican governor in the south is promoting vaccinations

Asa Hutchinson is the governor of Arkansas, a deeply Republican state in which vaccine rates are low and covid-19. infections are correspondingly high. But unlike many of his Republican colleagues, he is urging people to get vaccinated and has been on a tour of his state, holding meetings with local communities but he is facing deep resistance. Thanks to Fox News, other right wing media, and Republican leaders who have demonized the federal government and Anthony Fauci in particular, some people seem to think that anything that emerges from the government has to be opposed.
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