A contrarian look at meat eating

I am an omnivore with a guilty conscience. What I mean by that is that I think that vegetarians and vegans have convincing arguments based on moral, ethical, economic, and climate reasoning that that is the way to live. But I have simply not had the will power to take the leap and switch over to that diet. Instead, I have taken the minimal step of reducing my meat consumption.

I am aware that some arguments have been advanced to justify meat eating based largely on the fact that it is an easy way to get proteins and a few essential vitamins and on a more specious argument that since our evolutionary history reveals that we were meat eaters from a long time back, that means that eating meat must provide some evolutionary benefit.
[Read more…]

The evil god challenge

Believing in an all-good and omnipotent god is no less difficult than believing in an omnipotent all-evil one. Philosopher Stephen Law points out the inconsistency of thinking that the former is more plausible than the latter.

For centuries, many Western theologians and philosophers have answered the ‘problem of evil’ – how a benevolent god could allow for pain and suffering – with the argument that, in order for humans to perform good deeds, they must be free to choose between good and evil. In this animation from the Centre for Inquiry UK, the British philosopher Stephen Law considers the inverse scenario: if there were a fully evil, omnipotent god, could we possibly imagine he would allow for good deeds to be performed in the name of freedom to choose evil?

The NFT bubble keeps growing

I wrote a little while ago about the new thing called NFTs and my bafflement that anyone would buy one. But we are seeing them being hyped by celebrities and to my mind, it has all the hallmarks of a bubble, where something of little or no intrinsic value is talked up by famous people as a great new investment. Luke Savage points to a segment in which Paris Hilton and talk show host Jimmy Fallon give what seems like an informercial for NFTs, both having bought two slightly different versions of the same NFT featuring (I kid you not) a cartoon ape wearing dark glasses and a yachting cap.

Celebrities and social media influencers can’t shut up about them. From Serena Williams and Logan Paul to Matt Damon and William Shatner, the NFT craze quickly transcended generations and swept up an eclectic cavalcade of the rich and famous in its wake. (Jimmy Fallon, incidentally, spent more than $200,000 on the Bored Ape NFT that now graces his Twitter profile.) Beeple, name-dropped by Paris Hilton in her Fallon segment, fetched more than $3.5 million in an NFT auction.

[Read more…]

How to reuse an N95 mask

When it comes to wearing masks during the pandemic, not all masks are equal in the protection they provide. From what I have read, cloth masks seem to provide the least protection, though they allow the wearer colorful options and the ability to make some kind of statement, though why some people feel the need to make statements through their attire is something that I find puzzling. The blue surgical masks appear to be better than cloth and the N95 masks are the best. But while the surgical masks are relatively cheap, the N95 masks are pricey (ranging from $1 to $3 each) and that raises the question of how long one can use them and whether they can be reused.

The good news is that the answer is yes, based on the fact that the coronavirus has a survival time of about 72 hours when outside a host.
[Read more…]

Why so many Sri Lankans have foreign names

My father’s first name was Leo (short for Leonard). His three brothers were Reggie (Reginald), Benny (Benedict), and Archie (Archibald) which made them sound like they could be Bertie Wooster’s pals in the Drones Club. How did they come to have such typically English first names? It was because their father (my grandfather) was working as a civilian administrator for the British army in Burma (now Myanmar) at the time they were born. My grandfather was a great admirer of the British and as befitted such an Anglophile, giving all his children English first names (his only daughter was named Eta after an English nun, I believe) would have come naturally to him. He went further and Anglicized his last name from Nallasegarasingam (polysyllabic names are not uncommon in Sri Lanka) to just Singham, relegating the Nallasegara part to a middle initial. While he gave his children that middle name and initial, the subsequent generation (mine) dropped it altogether.
[Read more…]

Someone seems to be gunning for Boris Johnson

I have been observing the goings on over in the UK where prime minister Boris Johnson is under fire for having parties during the lockdown, thus breaking the covid-19 restrictions that his government had put in place that severely restricted the number of people who could attend indoor gatherings. These revelations have generated fury and reinforced the strong sense that elites feel that rules are for other people, not for them. This has led to a senior civil servant named Susan Gray being given the task of evaluating the charges and her report was initially expected to come out this week. If it turns out to be damning, Johnson’s job could be on the line.

The latest revelation concerns a surprise party thrown for his 56th birthday.
[Read more…]

Webb telescope reaches destination

The space telescope has reached its destination of the second Lagrange point.

The mirrors on the space observatory must still be meticulously aligned and the infrared detectors sufficiently chilled before science observations can begin in June. But flight controllers in Baltimore were euphoric after chalking up another success.

“We’re one step closer to uncovering the mysteries of the universe. And I can’t wait to see Webb’s first new views of the universe this summer!” the Nasa administrator, Bill Nelson, said in a statement.

“Wow, what a ride this last month it’s been,” said Amber Straughn, a deputy project scientist for Nasa.

The telescope has been described as a “time machine” by scientists and will enable astronomers to peer back further in time than ever before, all the way back to when the first stars and galaxies were forming 13.7bn years ago. That’s a mere 100m years from the Big Bang, when the universe was created.

The Webb will also hunt for signs of extraterrestrial life.

Considered the successor to the Hubble, which orbits 330 miles (530km) up, the Webb is too far away for emergency repairs. That makes the milestones over the past month – and the ones ahead – all the more critical.
…

Whether chasing optical and ultraviolet light like the Hubble or infrared light like the Webb, telescopes can see farther and more clearly when operating above Earth’s distorting atmosphere. That’s why Nasa teamed up with the European and Canadian space agencies to get Webb and its massive mirror – the largest ever launched – out into the cosmos.

So far, things have gone really smoothly for this highly complicated mission but there are still challenges ahead. One can only hope that now that the major hurdles have been overcome, especially the whole business of unfolding of a tennis court size structure from the small confines of a rocket nose cone, that some small glitch does not ruin things.

The whole operation reflects great credit on all the engineers and scientists who were involved in designing, building, and launching it.

Don Wilson of The Ventures (1933-2022)

The co-founder and rhythm guitarist of the highly influential instrumental surf-rock guitar group known as The Ventures has just died. According to NPR, to this day, The Ventures are the best-selling instrumental group of all time, known for their up-tempo, driving, pulsating beats. Bass player Nokie Edwards died in 2018.

Here are three examples of their music.

Here is their version of the theme from the popular TV show Hawaii Five-O.

[Read more…]

Radiation paradoxes 15: Some final thoughts

(Previous posts in this series: Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9, Part 10, Part 11, Part 12, Part 13, Part 14)

This series started by asking a simple question, whether a charged particle and a neutral particle would fall at the same rate when dropped from the same height and reach the ground at the same time. You would think that it would have a simple answer. But no. After a fairly long journey, we arrived at the conclusion that they would. But in the process, the series had to address a whole host of related issues along the way. While many of those were seemingly resolved, there are some fundamental questions that remain murky.

We saw in part #13 that the mass of a point charge like an electron is not a simple thing, because an electric charge has an associated electric field that itself has energy and thus should be thought of as contributing to the mass, except that the field energy density goes to infinity at zero distances, which is of course awkward for point-like charges. By looking at the radiation reaction force created by an accelerating charge, we learned about something called the acceleration energy Q that increases with the speed of a charge, and the energy radiated by a linearly accelerating charge comes from this source.
[Read more…]

The Havana Syndrome mystery continues

I remain intrigued by the so-called ‘Havana Syndrome’, the strange affliction reported by some (mostly) US government and embassy officials when they are in other countries. Starting in 2016, these people reported hearing ringing or chirping sounds and headaches and the like. Since the first reports came from US embassy personnel in Havana, people jumped to the conclusion that the Cubans or Russians were trying out some new kind of weapon using targeted microwaves or ultrasound. But that theory always seemed implausible, both for technical and geopolitical reasons.

The US government has devoted considerable effort to try and identify the cause with little success. Now the CIA has issued yet another report that suggests that the ‘foreign power’ theory is not tenable.
[Read more…]