Are selfies selfish?

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A subtle social effect of technology

lensOur photographic consultant was somewhat bemused by the rise of the “selfie,” that picture of one’s self possibly including others, possibly including a situation or location, taken normally with a smart-phone camera and distributed immediately and electronically. Self-portraits are as old as art and pictures of the family in front of the Grand Canyon as old as Kodak Brownies, but the enormous flood of “selfie” shots seems to be a new phenomenon. An older generation is inclined to blame the self-centered Millenials, using the newest of technology mostly in an adolescent game of self-promotion.

We think, however, that the “selfie” instead demonstrates an interesting example of how a simple technological change can result in a social phenomenon. This is not to say that technology is a cause, but it enables unexpected things—when people are included.

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How can you tell, if you’re not an expert?(3)

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Dueling PhDs

Our chief consultant writes:

gas-tube spectrumWe come to the hardest problem to set a layman: suppose there are two (or more) experts, that is, people who disagree strongly about some scientific or technical question, each of which has some claim to expertise. Call this “dueling PhDs.” You, as a layman, are called upon to decide between them. What do you do?

We assume that the matter is advanced or esoteric enough that there’s no question of you actually checking the math yourself. Also, that it’s not a matter of current research, where the answer really isn’t known. (That excludes, for instance, Stephen Hawking and Roger Penrose disagreeing about the Nature of Space and Time.)

You could try to evaluate the credentials of either side, working out whose PhD is stronger; or take of vote of scientists working on the matter; or, perhaps, decide on the basis of motivation, asking who is funded by whom. Slightly more useful is analyzing the rhetoric, on the assumption that someone with a poor scientific case is more likely to try to cover it with noise. All of these techniques leave us uneasy, and though we have some suggestions on how to use them we prefer a harder, more time-consuming method as a more reliable way of getting at something like the truth.

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Photography Perfected

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Contax 139 SLR camera
Contax 139

Our photography consultant writes:

This is the ubiquitous 35mm SLR, the single-lens reflex camera, the design you’re most likely to have actually seen and touched. (The Contax of the picture is a lesser-known name, but still recognizable as the same type as millions of Nikons, Yashikas, Pentaxes, etc.) With its many variations it dominated photography from the 1960s to the end of the film era. In fact, one can argue that the current master of the field is only a modification of this type, as its name implies: digital single-lens reflex, DSLR.

One could also argue that for overall flexibility, ease of use and quality of results the SLR has never really been surpassed and that (as far as such a thing is possible) in this design we see photography perfected. Of course pictures are made by photographers, the camera being only a tool, but after its invention more professional photographers chose this kind than any other.

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A Textbook Case

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textbook and calculationsOur astronomer writes:

Now and then I come across an interview of some Nobel prize-winning (or otherwise distinguished) scientist with the inevitable question, “What got you started on your path to fame?” Almost always it was an inspiring teacher or mentor, a person who imparted a love of or excitement in doing science. Somewhere in the years between High School and Grad School, between the time when our differences were mostly potential and the time we’re on our way in a particular direction, someone lit a fire. Often there’s a quote something like, “He/She showed me that [insert science here] is more than just a set of results in a dusty textbook, but something that I really enjoyed doing.”

Similarly, in accounts of some part of the history of science it’s almost inevitable that I encounter a sentence like, “so science proceeds in sometimes a roundabout and uncertain fashion, not at all as the textbooks tell you.” Textbooks are not often held up as good examples.

The message, sometimes explicit but often implied, is that our job as teachers and scientists is to inspire and excite. Trying to impart “textbook results” is deprecated. Well, this time I am standing up for the textbook and the type of learning it represents. There is a time when it is just what we should be teaching. We need to ask the question: what are we trying to do? What is the outcome we want in our students?

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The Fashionable Twin

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Our photography correspondent writes:

Rolleiflex TLR camera
Rolleiflex 3.5T

This time I’m singling out a type of camera that, while instantly recognizable and quite common in the days of film, was never ubiquitous. Most people preferred other kinds. But those who used them were very firmly attached to them and had definitely chosen them over whatever else might be on the market. This type found a particular home, among professional photographers, with those who specialized in portraits and fashion shoots.

This design is called the twin-lens reflex (TLR if you’re advertising to sell or buy one in the cost-per-word section of the photo magazine). “Reflex,” when used about cameras, means that there’s a mirror involved somewhere. “Twin lens” is obviously appropriate. But why twin lenses? It’s not a stereo or a panorama camera, a kind that takes two pictures at once. Well, the short answer is you need one lens to keep an eye on what the other is doing.

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How can you tell, if you’re not an expert? (2)

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How far can you trust a scientist?

 

Astronomy book and page of equationsOur chief consultant writes: It’s time to take up the question again of how a non-expert can evaluate an expert. In a previous post I introduced paradoxers, people from outside the field who claim to have made some highly important advance. Paradoxers are interesting in several ways and we’ll return to them later. Today we consider the case of some undoubted expert, a renowned or at least established scientist, describing something in his or her field. How much of it can you rely on to be true? How far can you actually trust a scientist?

This subversive-looking question occurred to our astronomer a while back. To try to answer it, he looked into the specific case of astronomy over the period 1833-1944, and wound up writing a well-regarded book with his conclusions. It’s 300 pages long, so I’m not going to try to include the whole thing in this post. His depressing conclusion is that even the best and most conscientious scientists may make statements as known fact, that turn out later to be wrong. His encouraging conclusion is that this is very rare, and for almost all scientists almost all the time, their presentations are reliable. In addition, there are a number of clues that help indicate the reliability, or otherwise, of what you’re being told.

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Photography under control

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The Agfa Super Silette

Agfa rangefinder cameraOur photography consultant writes:

What most often strikes people now about this camera is the “retro” styling. What strikes the person called to operate it, however, especially someone used to simple things like the Brownie, are the controls. You can adjust the focus from about three feet to infinity; you can set the exposure to squint into the desert sun or gather the glimmer of late twilight, or anywhere in between.  (Our astronomer has used the camera for exposures of twenty minutes!)  These two controls may not sound like much, but suddenly you have enormous creative control in your hands. There’s also a remarkably good lens; add some versatile 35mm film and there is hardly anything a photographer cannot do.

The downside (and there is always a downside) is that you may not be a photographer, or at least not feel like one. There is no “automatic” or “program” mode in this Agfa: you have to set the focus and exposure yourself. There are things to help you, though, and ways to get decent results even if your photographic ambitions are modest.

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“Calvin! Do something you hate!”

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Old book and kerosene lampOur chief correspondent writes:

In the 1980s-1990s comic strip Calvin and Hobbes, the six-year-old boy Calvin at one point caricatures his father’s attempts at discipline by swiping his glasses, striking a pose and admonishing: “Calvin! Do something you hate! It will build character!” Well, certainly childhood is full of rules and duties whose purpose, it appears, is only to make us uncomfortable or unhappy. Some people (even some kids) may enjoy classic literature, some do find working with numbers fun, some are found every weekend at the pick-up game of basketball; but everyone, as a child, is dragged through Moby Dick (or some equivalent), has to pass algebra, is drafted onto a PE team.

Of course adult life has its unpleasant duties (many among them connected with raising children), and they’re much harder to avoid or postpone than writing a book report. But we have more choices—that’s what being an adult means—and we can spend more time and effort on things we’ve chosen to do, rather than things chosen for us. We hang out with people who like the same things we do, do the same things, think the same way. Modern technology (including websites and blogs) supports a sometimes worrying fragmentation: we may not often be confronted with people who are different.

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Unsophisticated photography: the Brownie Hawkeye Flash

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Brownie Hawkeye cameraOur photography consultant writes: The Brownie Hawkeye is one of a long line of Kodak cameras designed to get everyone taking pictures (on Kodak film, of course). It was inexpensive to make, being mostly a plastic box of air, and simple to use—there are no adjustments to make. In the ‘50s and ‘60s this was the kind of camera given to kids as their first chance at taking their own pictures. No doubt there are still tens of millions of shoeboxes under beds filled with snapshots of family, pets, the neighborhood and summer vacations, all produced by this camera and its close kin.

These are now a half-century old and more, and were not constructed with longevity in mind. One would never repair a Brownie; it would cost less to buy a new one. But their very simplicity means there’s not much to go wrong, and there are still many of these around in excellent working order.

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How can you tell, if you’re not an expert? (1)

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Paradoxers

Our chief consultant writes: an occupational hazard of working in a Physics or Astronomy Department, or at an Observatory, is the occasional receipt of an unsolicited paper from someone outside these sciences. One of these typically presents a new theory, more or less sweeping in its results, that corrects (perceived) errors now being made by scientists.

Physicists and astronomers generally spend little time on them. It is highly unlikely that someone with a minimal or mistaken grasp of the sciences (as these invariably display) will stumble upon something useful that many very capable scientists have missed. It also requires a lot of time and concentration to get through an often torturous piece of writing. (It is a good exercise for teachers, however, in distinguishing poor presentation from genuine error. Sometimes they’re passed on to graduate students to hone their thinking.) In the nineteenth century the authors of this kind of thing were squaring the circle and disproving Newton. Augustus de Morgan made a study of them, calling them “paradoxers” (using the word “paradox” in a different sense than we do today), and Five Colors S&T has adopted this term. (It’s worthwhile dipping into de Morgan’s A Budget of Paradoxes if you can find a copy. The writing is dense, but often entertaining.)

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