Friday, December 1, 2017

Yes, I know I've reposted this, but it keeps getting more relevant







Tuesday, August 22, 2017

The Republicans' 3 x 3 existential threat

I've argued previously that Donald Trump presents an existential threat to the Republican Party. I know this can sound overheated and perhaps even a bit crazy. There are few American institutions as long-standing and deeply entrenched as are the Democratic and Republican parties. Proposing that one of them might not be around 10 years from now beggars the imagination and if this story started and stopped with Donald Trump, it would be silly to suggest we were on the verge of  a political cataclysm.

But, just as Trump's rise did not occur in a vacuum, neither will his fall. We discussed earlier how Donald Trump has the power to drive a wedge between the Republican Party and a significant segment of its base [I wrote this before the departure of Steve Bannon. That may diminish Trump's ability to create this rift but I don't think it reduces the chances of the rift happening. – – M.P.]. This is the sort of thing that can profoundly damage a political party, possibly locking it into a minority status for a long time, but normally the wound would not be fatal. These, however, are not normal times.

The Republican Party of 2017 faces a unique combination of interrelated challenges, each of which is at a historic level and the combination of which would present an unprecedented threat to this or any US political party. The following list is not intended to be exhaustive, but it hits the main points.

The GOP currently has to deal with extraordinary political scandals, a stunningly unpopular agenda and daunting demographic trends. To keep things symmetric and easy to remember, let's break each one of these down to three components (keeping in mind that the list may change).


With the scandals:

1. Money – – Even with the most generous reading imaginable, there is no question that Trump has a decades long record of screwing people over, skirting the law, and dealing with disreputable and sometimes criminal elements. At least some of these dealings have been with the Russian mafia, oligarchs, and figures tied in with the Kremlin which leads us to…

2. The hacking of the election – – This one is also beyond dispute. It happened and it may have put Donald Trump into the White House. At this point, we have plenty of quid and plenty of quo; if Mueller can nail down pro, we will have a complete set.

3. And the cover-up – – As Josh Marshall and many others have pointed out, the phrase "it's not the crime; it's the cover-up" is almost never true. That said, coverups can provide tipping points and handholds for investigators, not to mention expanding the list of culprits.


With the agenda:

1. Health care – – By some standards the most unpopular major policy proposal in living memory that a party in power has invested so deeply in. Furthermore, the pushback against the initiative has essentially driven congressional Republicans into hiding from their own constituents for the past half year. As mentioned before, this has the potential to greatly undermine the relationship between GOP senators and representatives and the voters.

2. Tax cuts for the wealthy – – As said many times, Donald Trump has a gift for making the subtle plain, the plain obvious, and the obvious undeniable. In the past, Republicans were able to get a great deal of upward redistribution of the wealth past the voters through obfuscation and clever branding, but we have reached the point where simply calling something "tax reform" is no longer enough to sell tax proposals so regressive that even the majority of Republicans oppose them.

3. Immigration (subject to change) – – the race for third place in this list is fairly competitive (education seems to be coming up on the outside), but the administration's immigration policies (which are the direct result of decades of xenophobic propaganda from conservative media) have already done tremendous damage, caused great backlash, and are whitening the gap between the GOP and the Hispanic community, which leads us to…



Demographics:

As Lindsey Graham has observed, they simply are not making enough new old white men to keep the GOP's strategy going much longer, but the Trump era rebranding of the Republican Party only exacerbates the problems with women, young people, and pretty much anyone who isn't white.

Maybe I am missing a historical precedent here, but I can't think of another time that either the Democrats or the Republicans were this vulnerable on all three of these fronts. This does not mean that the party is doomed or even that, with the right breaks, it can't maintain a hold on some part of the government. What it does mean is that the institution is especially fragile at the moment. A mortal blow may not come, but we can no longer call it unthinkable.

Lots of threads converging on this one

And all of them tremendously important. Corruption and regulatory capture. An almost mystical faith in the magic of markets and private-enterprise approaches (even if they end up being all but completely government-subsidized). An inexhaustible tolerance for concentration of wealth and power. Internalized Randianism complete with the belief that the rest of us owe a debt to the rich and powerful that we can never fully repay. Regulatory capture and occasionally good old-fashioned corruption.

Thank God for John Oliver.


Thursday, November 30, 2017

I'm running behind again so...

Here are two beautiful French planes from 1909. Back tomorrow with actual prose.



And a few impressive airships.



Tuesday, November 28, 2017

Belated Tuesday Tweets


















Kruzno

A few years ago, when I was teaching high school, I designed some games to illustrate mathematical concepts and develop strategic thinking and problem-solving skills. The clear winner in terms of player response was a game called Kruzno.



Despite the pieces (I decided to go with something off the shelf for the prototype), it's not a chess variant. Instead, it's a capture-and-evade abstract strategy game where the rank of the pieces is non-transitive. The rules are simple enough for a small child to play but challenging enough to keep reasonably competent chess players on their toes. It is also the official game of a small village in Slovakia, but that's a story for another time.


Between now and Christmas, I'll be writing some posts on game design and possibly sharing some thoughts and cautionary tales about jumping into a small business with no relevant experience. In the meantime, I still have some of that first run up for sale on Amazon. Go by and check it out.

Monday, November 27, 2017

Another Tesla article from the Scientific American archives (along with some very cool train pictures).

19th Century drawing of a Geissler tubes.






This story mainly stands on its own but there are a couple points I want to emphasize. First, it's a nice example of that distinctive Tesla combination: important innovator; savvy showmen; extravagantly over-promising flake. That's not just something that shows in retrospect; you can see it coming through contemporary accounts. Sober observers were well aware of all of these facets. The man was capable of amazing advances; he also reported getting messages from Mars.

I also like the way the story knocks down a false but persistent trope. There's a tendency to treat earlier generations as innocent and unimaginative, often oblivious to the extraordinary events that were starting to unfold. Call it the "little did they imagine" genre. The trouble is it's almost entirely wrong. Particularly in America, people in the late 19th and early 20th centuries saw themselves as living in a wondrous time and they tended to greet new developments with great excitement, if anything, often overestimating the degree to which their world was about to change.

Reading through these old articles, one thing that strikes me is that wildly ambitious ideas were not accepted unskeptically, but they weren't treated dismissively either. People seemed to get that an idea could fail miserably and still be of great value.
























































Friday, November 24, 2017

This is what a good job market looks like.

In the postwar era, employers (particularly what we would now call the stem fields) were genuinely hungry. They were willing to be flexible about qualifications and creative about recruiting.

What's My Line? (1950–1967)
Episode dated 20 February 1955 






Thursday, November 23, 2017

"As God as my witness..." is my second favorite Thanksgiving episode line [Repost]



If you watch this and you could swear you remember Johnny and Mr. Carlson discussing Pink Floyd, you're not imagining things. Hulu uses the DVD edit which cuts out almost all of the copyrighted music. .

As for my favorite line, it comes from the Buffy episode "Pangs" and it requires a bit of a set up (which is a pain because it makes it next to impossible to work into a conversation).

Buffy's luckless friend Xander had accidentally violated a native American grave yard and, in addition to freeing a vengeful spirit, was been cursed with all of the diseases Europeans brought to the Americas.

Spike: I just can't take all this mamby-pamby boo-hooing about the bloody Indians.
Willow: Uh, the preferred term is...
Spike: You won. All right? You came in and you killed them and you took their land. That's what conquering nations do. It's what Caesar did, and he's not goin' around saying, "I came, I conquered, I felt really bad about it." The history of the world is not people making friends. You had better weapons, and you massacred them. End of story.
Buffy: Well, I think the Spaniards actually did a lot of - Not that I don't like Spaniards.
Spike: Listen to you. How you gonna fight anyone with that attitude?
Willow: We don't wanna fight anyone.
Buffy: I just wanna have Thanksgiving.
Spike: Heh heh. Yeah... Good luck.
Willow: Well, if we could talk to him...
Spike: You exterminated his race. What could you possibly say that would make him feel better? It's kill or be killed here. Take your bloody pick.
Xander: Maybe it's the syphilis talking, but, some of that made sense.

Wednesday, November 22, 2017

Igon values, superstar coin flippers, and the Gladwell problem

Malcolm Gladwell has started coming up in quite a few major threads and larger pieces, so I decided I needed to get up to speed on some of the controversies involving the author. Some of the more substantial have centered around what Steven Pinker has called the Igon value problem

From Pinker's review of "What the Dog Saw"
An eclectic essayist is necessarily a dilettante, which is not in itself a bad thing. But Gladwell frequently holds forth about statistics and psychology, and his lack of technical grounding in these subjects can be jarring. He provides misleading definitions of “homology,” “sagittal plane” and “power law” and quotes an expert speaking about an “igon value” (that’s eigenvalue, a basic concept in linear algebra). In the spirit of Gladwell, who likes to give portentous names to his aperçus, I will call this the Igon Value Problem: when a writer’s education on a topic consists in interviewing an expert, he is apt to offer generalizations that are banal, obtuse or flat wrong.


Gladwell got the best of the follow up exchange, dismissing “igon value” as a spelling error while getting Pinker sucked into a bunch of secondary or even tertiary arguments. (One of the best indicators of intelligence is the ability to avoid discussions about the heritability of intelligence.)

The spelling error defense is technically correct but it misrepresents the main point of the criticism. First off, on a really basic level, this indicates poor fact checking on the part of Mr. Gladwell and the New Yorker. Even working under the relatively low standards of the blogosphere, I always try to Google unfamiliar phrases before quoting them. You'd think that the editors of America's most distinguished magazine would do at least that much.

More importantly, spelling errors fall in two basic categories. The first does not tell us anything substanitive about the writer. Given the ghoti insanity of the English language, being a bad speller does not necessarily imply a weak vocabulary or poor mastery of the language (put another way, not knowing whether it's double C or double S in "necessarily"does not necessarily suggest that you don't know what "necessarily" means). There are, however, cases (particularly involving transcription) where spelling errors can indicate that the writer is unfamiliar with the words in question. That appears to be the case here.

Pinker's central criticism largely boils down to phonetic reporting. Gladwell often goes into stories with a weak grasp of the field in question, as a result he frequently makes serious mistakes, constantly misses important subtleties, and is almost completely dependent on his subjects for understanding and context. Add to this poor fact checking and a disturbing nonchalance about getting the story right, and things can get ugly quickly.

Somewhat ironically, Gladwell hit back at Pinker for employing one of the same techniques which Gladwell is so proud of, picking a detail that told a good story and memorably illustrated a larger idea. The Igon Value Problem worked beautifully on those terms but it was far from the most serious or conclusive example available, even if we limit ourselves to the single article in question, "Blowing Up."

For example, the piece is very much invested in the idea of Taleb as Wall Street revolutionary. We could quibble about just how radical the Black Swan ideas and strategies are, but it is an entirely defensible interpretation. Unfortunately, Gladwell doesn't really understand which ideas are debatably new and which are familiar to anyone in finance. Here's an excerpt (starting and ending mid-paragraph):

There was just one problem, however, and it is the key to understanding the strange path that Nassim Taleb has chosen, and the position he now holds as Wall Street's principal dissident. Despite his envy and admiration, he did not want to be Victor Niederhoffer -- not then, not now, and not even for a moment in between. For when he looked around him, at the books and the tennis court and the folk art on the walls -- when he contemplated the countless millions that Niederhoffer had made over the years -- he could not escape the thought that it might all have been the result of sheer, dumb luck.

Taleb knew how heretical that thought was. Wall Street was dedicated to the principle that when it came to playing the markets there was such a thing as expertise, that skill and insight mattered in investing just as skill and insight mattered in surgery and golf and flying fighter jets.

...

For Taleb, then, the question why someone was a success in the financial marketplace was vexing. Taleb could do the arithmetic in his head. Suppose that there were ten thousand investment managers out there, which is not an outlandish number, and that every year half of them, entirely by chance, made money and half of them, entirely by chance, lost money. And suppose that every year the losers were tossed out, and the game replayed with those who remained. At the end of five years, there would be three hundred and thirteen people who had made money in every one of those years, and after ten years there would be nine people who had made money every single year in a row, all out of pure luck.

But of course, Taleb didn't have to "do the arithmetic in his head" because, like virtually everyone else on Wall Street, he had probably read almost the same analogy in a famous passage from A Random Walk Down Wall Street by Burton Malkiel [transcribed via Dragon so beware of homonyms]:

Perhaps the laws of chance should be illustrated. Let's engage in a coin flipping contest. Those who can consistently flip heads will be declared winners. The contest begins and 1,000 contestants flip coins. Just as would be expected by chance, 500 of them flip heads and these winners are allowed to advance to the second stage of the contest and flip again. As might be expected, 250 flip heads. Operating under the laws of chance, there will be 125 winners in the third round, the three in the fourth, 31 in the fifth, 16 in the sixth, and 8 in the seventh.

By this time, crowds start to gather to witness the surprising ability of these expert coin-flippers. The winners are overwhelmed with adulation. They are celebrated as geniuses in the art of coin-flipping, their biographies are written, and people urgently seek their advice. After all, there were 1000 contestants and only eight could consistently flip heads. The game continues and some contestants eventually flip heads nine and ten times in a row. [* If we had let the losers continue to play (as mutual fund managers do, even after a bad year), we would have found several more contestants who flipped eight or nine ads out of 10 and were therefore regarded as expert coin-flippers.] The point of this analogy is not to indicate that investment-fund managers can or should make their decisions by flipping coins, but that the laws of chance do operate and that they can explain some amazing success stories.


(I love that second paragraph. Pretty much any time I flip past CNBC it comes flooding back to mind.)

Malkiel published this book in 1973 and though it more than ruffled a few feathers, it quickly became one of the seminal books on investing. Malcolm Gladwell's New Yorker piece came out 25 years later.

None of this is meant to imply any kind of deliberate plagiarism. Quite the opposite. I very much doubt that Gladwell realized he was paraphrasing a well-known passage. What I strongly suspect happened was that Taleb cited this in an interview as a standard example that everyone would be familiar with, sort of like describing a situation as a "frog in boiling water."

Gladwell's unacknowledged paraphrase is yet another indication that he didn't understand the strange role that economic theory and particularly market efficiency (in this case the semi-strong variety) plays on Wall Street, a role that was central to his narrative. This would be bad enough if he was just shooting for a straightforward profile, but Gladwell insists on playing the deep thinker, making pseudo-profound points, even closing with a grand sweeping moral about human nobility:

“That is the lesson of Taleb and Niederhoffer, and also the lesson of our volatile times. There is more courage and heroism in defying the human impulse, in taking the purposeful and painful steps to prepare for the unimaginable.”

Gladwell loves to tell what Christopher Chabris has termed "just-so stories," cute little fables counterintuitive and surprising enough to catch the eye but neat and simple enough to go down easy. Paradoxically, pulling off that sort of simplicity requires that the writer have a deep and subtle understanding of his or her subject. Simplifying a subject you don't understand never goes well.

Tuesday, November 21, 2017

Tuesday Tweets

One of my great, ongoing problems is what to do with ideas that I'm not ready to write up or which are not ready to be written. One of the wonderful things about a blog is that it's a welcoming environment for these not-ready-for-prime-time pieces. It's low-stakes and flexible both in terms of length and format. In other words, a great place to pin notions and notes.

That said, there are things too insubstantial even for a blog. That and the need for self-promotion are the main reasons I've taken to Twitter. The bar for a tweet is not so much low, as it is sitting on the ground. Nonetheless, there are a few that feel like they might be worth sharing, either because I liked how they turned out or in parentheses far more frequently) they cite some article that might be of interest to our regular readers.




















Monday, November 20, 2017

Australia citizenship furore

This is Joseph

Here is a case where they missed the main argument.  In Australia a number of MPs have been disqualified because the constitution prohibits dual citizens from running for office.  The referenced article asks why MPs will not be forced to repay their salaries when welfare debts are collected all of the time.  Now I am not necessarily a great fan of putting in place debt collection on the most vulnerable.  But that's not the real issue here.

The real issue is that you don't want to raise the stakes any higher.  As it is, being disqualified is a terrible process for a politician to go through.  Forcing the unexpectedly unemployed person to pay back hundreds of thousands of dollars can well add destitution to the consequences. 

And, in some cases, this may be out of proportion to the crime.  In some cases MPs were either sloppy, cavalier, or deceptive and this makes sense.  These are not traits one would want.  But how can you be sure you don't have citizenship somewhere?  After all, many people have overseas links and it is often possible that a parent has taken actions that you are unaware of (estrangement does happen).  Or, even more likely, is ambiguity like in the case of Susan Lamb.  She might have UK citizenship but cannot prove it and so cannot renounce it. 

In the case of these types of complex administrative cases, being punitive only makes a bad case worse.  I am all in favor of rooting out corruption but this would appear to run some risks of making defiance the most viable strategy and I am not sure that ends well. 


Friday, November 17, 2017

That sense of living in a science fiction novel

As previously mentioned, I'm working on a project about technology. One of the central points is the ways we think and feel about technology -- the language, the attitudes, the mental frameworks -- were largely in place by the early 20th century, and became set in the post-war era.

When people internalize their reactions to abnormal conditions, unconsciously continue to respond to new things in old ways, The result is seldom good. We'll delve more into that later. For now, we're still in the anecdote and data gathering stage of the process, so here's an excellent example of how even the most sober observers of the period were so conscious of how astounding the times were that they explicitly described the advances of the time in terms of science fiction novels (even before the term "science fiction" had been coined).


From Scientific American May 17, 1890
We know that at the time of the first official experiment, the two navigators of the Goubet remained  eight full hours under water without any other communication with the outside world than the telephone wire that they used to give their impressions, which, by the way, were of a cheerful character. When they made their appearance, they were fresh, well, and lively, having been able to attend to all the functions of life, and being ready to begin again. There was still in the tubes enough oxygen to last twenty hours.

It has been said of the Goubet that it is a realization of the dream conceived by Jules Verne in his "Twenty Thousand Leagues under the Sea;" but the Goubet is better than that. It is not only one romance, but it is rather two of the great amuser's romances amalgamated. It is both "Twenty Thousand Leagues under the Sea" and " Doctor Ox" in action!









Thursday, November 16, 2017

Tax policy

This is Joseph

There are two pieces of journalism by Kevin Drum that are worth not missing.

One, is his noting that some of the current tax reform plans are absurdly generous to inherited wealth:
If you’re not following what this means, here’s an example. Suppose you’re uber-rich and you buy $1 billion in Apple Stock. By the time you die it’s worth $3 billion. Your heirs, lucky ducks that they are, don’t have to pay estate tax on that $3 billion. But they do have to pay normal capital gains on the $2 billion appreciation in the Apple stock. At 20 percent that comes to $400 million.
However, the Republican bill eliminates that too. Not only does it eliminate the estate tax completely, but it allows you to “step up” the value of the estate and avoid capital gains taxes entirely. In our example, you literally get $3 billion free and clear, and you owe taxes in the future only on the appreciation above $3 billion.
Now it is possible to decide that there should not be capital gains taxes.  This is actually an area of policy discussion as Canada has had a lifetime capital gains exemption.  But if this is what you would like to see happen then you should do it for all capital gains and not focus all of the benefit on the wealthy.  And if you don't exempt these assets from capital gains then the paperwork can get messy.  So, in a sense, the estate tax is a nice way to give the gift of less paperwork to recently bereaved families (not a bad thing).

But turning tax policy into a way to maximize the benefits of inherited wealth seems to an unnecessary enhancement, above and beyond the paperwork simplification.  There should be one or the other. 

Two, is his piece on how tax havens actually make income taxes regressive in Scandinavia.  It's a good item for considering how much real tax burden there is among the elite (the one's who are getting a large tax cut, or potentially getting a large tax cut at least).  You can make moral arguments about what is the right level of obligation that people have to support the nations and laws that make their wealth possible.  It's a complicated area.  But this does somewhat undermine the narrative that taxes at the topic are actually crushing.

Wednesday, November 15, 2017

What if shame works?

I've been meaning to do multiple posts on Patrick Radden Keefe's extraordinary article on how the Sackler family built a fortune by largely engineering the opioid crisis. You should definitely read the whole thing, but there are a number of interesting points that are worth singling out.

For instance, the role of social pressure in curbing bad corporate behavior.


Mike Moore, the former Mississippi attorney general, believes that the Sacklers will feel no pressure to emulate this gesture until more of the public becomes aware that their fortune is derived from the opioid crisis. Moore recalled his initial settlement conference with tobacco-company C.E.O.s: “We asked them, ‘What do you want?’ And they said, ‘We want to be able to go to cocktail parties and not have people come up and ask us why we’re killing people.’ That’s an exact quote.” Moore is puzzled that museums and universities are able to continue accepting money from the Sacklers without questions or controversy. He wondered, “What would happen if some of these foundations, medical schools, and hospitals started to say, ‘How many babies have become addicted to opioids?’ ” An addicted baby is now born every half hour. In places like Huntington, West Virginia, ten per cent of newborns are dependent on opioids. A district attorney in eastern Tennessee recently filed a lawsuit against Purdue, and other companies, on behalf of “Baby Doe”—an infant addict.

There is something both sad and hopeful in this passage.

One of the overarching themes of this article is the way we are replaying the gilded age in increasingly obvious way. Specifically, the piece compares 19th century robber barons buying respectability with libraries and universities and today's billionaires doing much the same (though I think the comparison may be somewhat unfair to Carnegie and Stanford). This certainly applies to the Sackler family.

But if vanity and the pursuit of respectability can persuade plutocrats to give large chunks of money to good causes (or at least causes with the appearance of good), is it possible that fear of shame might dissuade these same people from doing bad things?

Tuesday, November 14, 2017

If you believe in n-rays, believing in mental radio is not that heavy a lift

Another visit to the Scientific American collection of the Internet Archive.

Having spent a big chunk of the past few weeks reading over contemporary accounts of science and technology from the late 19th and early 20th centuries, I've come to the conclusion that, from our 21st century perspective, we tend to overestimate the credulousness of people at the turn-of-the-century while greatly underestimating our own gullibility

The key here is context, belief in something (or, more precisely, belief in the possibility of something) that turns out not to exist has to be judged based on the amount of evidence (or, more precisely, the amount of non-evidence) that had accumulated at the time. 150 years ago or so, sending expeditions to look for legendary mega-fauna was an entirely reasonable type of scientific investigation. 50 years ago, not so much. Today, not at all. Every time a researcher, preferably one who very much wants to find a phenomenon in question, comes up empty, the lack of result adds to the evidence that the phenomenon simply doesn't exist. Eventually, enough would be believers dig enough dry wells to make the nonexistence a confirmed scientific fact.

But there's another important difference between 1900 and 2017 that needs to be taken into account. Without understating the steady and impressive current flow of new ideas and discoveries, we now generally work under a relatively stable intellectual framework. We reject the possibility of telepathy in part because so many motivated researchers have failed to find it, but also because no one has proposed a plausible mechanism for it consistent with the other things we know with great confidence about the world.

The close of the 19th century was a time of great optimism and discovery, but as a consequence not one of great certainty. Science and technology were causing cataclysmic shifts in the way people viewed the world. When Einstein endorsed a book on mental telepathy and Tesla speculated that he had just received communications from Martians, they were working under a framework that was assumed to be changing and incomplete.

Coming shortly after the discovery of x-rays, n-rays did not initially seem all that implausible, and once you've accepted the possibility of a new kind of radiation that was related to biological and even mental activities, accepting ideas like "mental radio" and even spiritualism isn't that much of a reach. N-rays themselves were debunked fairly quickly (see below for the fascinating details), but the sense that everything you know can suddenly change remained a key part of the mentality of the period.



June 17, 1905



The debunking of n-rays is, itself a fascinating story. From Wikipedia.

The "discovery" excited international interest and many physicists worked to replicate the effects. However, the notable physicists Lord Kelvin, William Crookes, Otto Lummer, and Heinrich Rubens failed to do so. Following his own failure, self-described as "wasting a whole morning", the American physicist Robert W. Wood, who had a reputation as a popular "debunker" of nonsense during the period, was prevailed upon by the British journal Nature to travel to Blondlot's laboratory in France to investigate further. Wood suggested that Rubens should go since he had been the most embarrassed when Kaiser Wilhelm II of Germany asked him to repeat the French experiments, and then after two weeks Rubens had to report his failure to do so. Rubens, however, felt it would look better if Wood went, since Blondlot had been most polite in answering his many questions.

In the darkened room during Blondlot's demonstration, Wood surreptitiously removed an essential prism from the experimental apparatus, yet the experimenters still said that they observed N rays. Wood also stealthily swapped a large file that was supposed to be giving off N rays with an inert piece of wood, yet the N rays were still "observed". His report on these investigations were published in Nature, and they suggested that the N rays were a purely subjective phenomenon, with the scientists involved having recorded data that matched their expectations. There is reason to believe that Blondlot in particular was misled by his laboratory assistant, who confirmed all observations. By 1905, no one outside of Nancy believed in N rays, but Blondlot himself is reported to have still been convinced of their existence in 1926