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There is nothing that students at top schools love more than (a) denouncing Charles Murray for purportedly writing about a correlation between race and IQ, and (b) celebrating the merits of studying among a diverse student body (therefore we need affirmative action programs). Yet “Even With Affirmative Action, Blacks and Hispanics Are More Underrepresented at Top Colleges Than 35 Years Ago” (nytimes) shows that they have chosen to attend schools where (a) the admissions officers behave as though they agree with the race-IQ thoughtcrime, and (b) they are unlikely to see a non-white/Asian student.

If these good-hearted young people are as passionate about diversity as they say, why didn’t they choose to save a ton of money and attend a state-run school whose student body is more representative of the American population (which leaves open the question, still, of whether to count up all Americans and sort by skin color or to look at the population of 18-year-old Americans)?

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The founder of Bye Aerospace has written an IEEE Spectrum article about a 2-seat 3-hour trainer: “Cheaper, Lighter, Quieter: The Electrification of Flight Is at Hand”

I’m skeptical that this small company, founded in 2007, can do what has eluded Airbus and Pipistrel. But the editors of Spectrum are supposed to know stuff about electricity. So maybe this isn’t crazy.

It starts with a huge weight savings on the engine:

You rev the motor not with a throttle but a rheostat, and its high torque, available over a magnificently wide band of motor speeds, is conveyed to the propeller directly, with no power-sapping transmission. At 20 kilograms (45 pounds), the motor can be held in two hands, and it measures only 10 centimeters deep and 30 cm in diameter. An equivalent internal-combustion engine weighs about seven times as much and occupies some 120 by 90 by 90 cm.

Then there have been big improvements in batteries, supposedly, since 2007:

Bye Aerospace has worked with Panasonic and Dow Kokam; currently we use a battery pack composed of LG Chem’s 18650 lithium-ion batteries, so called because they’re 18 millimeters in diameter and 65 mm long, or a little larger than a standard AA battery. LG Chem’s cell has a record-breaking energy density of 260 watt-hours per kilogram, about 2.5 times as great as the batteries we had when we began working on electric aviation. Each cell also has a robust discharge capability, up to about 10 amperes. Our 330-kg battery pack easily allows normal flight, putting out a steady 18 to 25 kW and up to 80 kW during takeoff. The total energy storage capacity of the battery pack is 83 kWh.

A little fantasy doesn’t hurt:

Should something go wrong with the batteries in midflight, an alarm light flashes in the cockpit and the pilot can disconnect the batteries, either electronically or mechanically. If this happens, the pilot can then glide back to the airfield, which the plane will always be near, given that it is serving as a trainer.

This isn’t true even for pattern work at a typical busy training airport where the control tower might say “extend upwind two miles.”

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As far as I have seen, saying “calm down” is nearly always a waste of breath. ” “Trump Isn’t a Threat to Our Democracy. Hysteria Is.” (nytimes) and associated comments illustrate this principle nicely.

The authors, eggheads from Yale and Oxford, saying “calm down”:

The sky is not falling and no lights are flashing red, but Americans have nonetheless embraced a highly charged, counterproductive way of thinking about politics as a “new Cold War” between democracy and totalitarianism.

History raises serious doubts about how helpful this tyrannophobic focus on catastrophe, fake news and totalitarianism really is in dealing with the rise of the populist right, of which this bumbling hothead of a president is a symptom.

If there is one lesson from the 20th century worth learning, it is that an exclusive focus on the defense of liberal fundamentals against a supposed totalitarian peril often exacerbates the social and international conflicts it seeks to resolve.

Reader comments, picked by the NYTimes editors:

Democracy purposefully corrupted in so many different ways put Trump in power.

Seeing the threat that Trump is to democracy is a rational conclusion to rational analytical thought.

Word salad dressed up as coherent thought. Trump IS a threat to our democracy and to dismiss everyone who sees it as being hyperbolic is disingenuous . You can’t ignore how millions of people feel.

No, Trump and his enablers have not yet declared themselves our forever rulers. But they are taking steps to undermine the government and our system of the systems of checks and balances.

Some reader comments, upvoted by other readers:

Democrats are united in wanting a fairer distribution of the economic pie. The Republicans are not. They are the tyranny.

And what of the recent reported survey findings that more than half of self-identified Republicans would support suspension of the 2020 presidential election until the country could fix the mythical voter fraud problem

I would rather err on the side of fighting tyranny now, rather than regretting its implementation later. As an earlier commentator observed – of course, panic and hysteria are bad. But anyone paying attention to the current state of democratic institutions in the USA should be alarmed. Perhaps the authors of this piece have not been paying attention.

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Given the crazy prices that one can charge for anything aviation-related, how about this brilliant idea for making money: “all gender restroom” signs for aircraft.

The big market is, of course, airlines, but one could also sell them to the bizjet and turboprop crowd.

[Here’s an example from the San Diego Airport (KSAN), which I used for a recent Facebook post: “I’m so old I remember when the palm tree was the symbol of California.”

]

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The “telephoto” camera is finally more than a gimmick on the iPhone X? What else is improved for photographers on this new phone? Apple didn’t go for a bigger sensor or do anything else dramatic, did they?

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I’ll be in Lisbon next Tuesday, September 19. Meet for coffee at the Avenida Palace at 5 pm? If interested, please add a comment to this posting. I will have limited email access, but should be able to check this site on Tuesday morning.

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I recently completed a five-year term as Secretary of the MIT Class of 1982.

Our new Secretary emailed to ask for “tips on extracting information from classmates” and “Did you ever target specific individuals?” Here was my response:

Thanks for stepping up.

A good salesperson doesn’t hear the first three times the prospect says “No.” So I think you may want to send out at least 2-3 emails between issues.

Also, people are much better at reacting than generating content. If you ask someone “What’s new?” the invariable answer is “Not much.” If you tell them about going to see Wonder Woman, though, they start talking about the last time that they went to the movies, what they saw, etc. Or maybe they saw Wonder Woman and had some reactions. You saw that every now that I then I had to bring out the big hammer and mention Trump 🙂 [though I myself am pretty much indifferent to federal politics]

I thought that it helped to have themes for various issues. That way people can pipe up with “Kid X graduated College Y” but others can share life wisdom. Since we’ve reached the age where not too much changes, instead of searching for conventional news of changes think of yourself as a sociologist with a group that you’re following. Can you figure out if it is better to live in the U.S. or a different country. Is it better to live in the country or city? Are people happier if they have kids or don’t have kids? Is it better to be married and divorce than never to have been married at all? What happens when someone tries to get a new job at age 60? What is it like to go back to school at age 60?

I didn’t try the individual email approach, but the group of people who actually care is small enough (e.g., the ones who showed up at the reunion) that yours is probably a good idea. People can’t not respond on the theory that someone else will.

[How have times changed since 1982, other than the Wisconsin glaciation having receded from the MIT campus? Tuition was around $5,000 per year when our class started. The acceptance rate for people who applied to join the Class of 1982 was roughly 50 percent. Freshmen entering this fall will pay $50,000 per year in tuition. They had less than an 8 percent chance of being accepted.]

Related:

• What I learned at my 35th MIT reunion
• Social Security: How do you run a retirement system for people who spend like drug dealers?

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Sixteen years after 9/11 and we are still at war. Here are a couple of books that I have read recently that are relevant…

Hue 1968: A Turning Point of the American War in Vietnam, by Mark Bowden. The book is about more than the one battle. There are excellent introductory chapters putting the entire conflict into context. According to the author, we were on the wrong side the whole time, opposing the democratic will of the Vietnamese people. We fooled ourselves with wishful statistics. Our Air Force was plainly useless against an agricultural society. Eventually Robert McNamara figured out that we were losing and, despite having been a primary author of the war under both Kennedy and Johnson, admitted it. He was then fired by Lyndon Johnson for “having gone soft.”

Conquerors: How Portugal Forged the First Global Empire, by Roger Crowley. One of the smallest and poorest European powers blunders around Africa and into the Indian Ocean and Red Sea. This was the first modern conflict between Islam and the West and, thanks mostly to superior skills with artillery, the West came out ahead. The lack of understanding between Western Europeans and the rest of the world was already well-developed. When the Portuguese arrived in India and were taken by a Hindu prince to a Hindu temple, for example, they thought that they were being hosted by a Christian and taken to worship in a variant of Christianity.

Readers: How are you marking this sad anniversary? Or at least what are your thoughts and reflections?

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One of the most notorious failures of the dot.com era was pets.com, which cost investors $300 million.

Recently I got a direct mail piece from chewy.com, which appears to be the same thing. The Miami Herald says that chewy.com is growing wonderfully.

Mindy the Crippler gets Hill’s Ideal Balance for $48.59, including Prime shipping, from Amazon. The same product is available at the exact same price from chewy.com. Since almost everyone is already an Amazon customer, what would motivate them to switch to chewy.com?

Readers: help me out here… how can this idea that completely failed in the 1990s suddenly be viable? Why chewy.com instead of Amazon.com, Walmart.com, Petsmart.com, et al.?

[I recognize that some ideas did become more viable with the growth of the Internet, e.g., the collaborative online encyclopedia (tried many times before Wikipedia, but never reached critical mass). But if anything Amazon and the other big retailers seem to have become more dominant compared to the 1990s.]

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Labor Day Week continued…

Part of the misery of work in the U.S. is commuting in a country of 325 million trying to use infrastructure (highways, railroad tracks, bridges, tunnels) that was built for a country of 150 million.

This summer I was amazed that a guy at a party admitted to being an executive for the company that runs the universally hated commuter rail system here in the Boston area.

When they’re on schedule, our trains run every hour or two during off-peaks times and usually no more frequently than every 30 minutes at rush hour. This renders the commuter rail more or less useless except for those who can plan their lives to the minute.

I asked Could the trains run every 15 minutes as they do in Moscow? [Subway lines in Moscow run every minute on weekdays, every two minutes on weekends, but commuter rail is less frequent.]

The answer was “no” because the MBTA uses super heavy rolling stock, more like what you’d see on a freight train, and the tracks would be quickly destroyed by such frequent usage. The difference is easy to see if you go to England, for example, where the long-distance “trains” look to an American eye more like subway cars.

Why couldn’t we buy these lighter vehicles here? “I don’t know,” he responded, “but I think there are political connections involved with the rolling stock manufacturer.”

Why were the prices so high and yet the system was always losing money? “Unions,” was the answer. The company that runs the train is French. How could our unions be less efficient than workers in France? “It is on a completely different scale,” the international executive responded. “I have never seen a group of workers as unproductive as American union members.”

We have structural problems here in Boston as well. Because North Station and South Station aren’t connected, trains can’t be scheduled to keep rolling through a station. They have to back up after reaching downtown Boston. The $15 billion Big Dig project didn’t connect the stations. “Take long view, build N-S Rail Link” suggests that we redo the Big Dig so as to accomplish this goal.

Related:

• skip out on the commute anywhere in the U.S. with SSDI and OxyContin
• live in Massachusetts, but skip out on the Boston-area commute by collecting child support for 23 years

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