A Call for Help Re: Substack

What are the pros and cons of moving this blog to Substack?

This blog will forever be free, so I’m not looking to shift in order to monetize anything. But for those of you who have used Substack (and especially for those of you who have used both WordPress and Substack), what can you tell me that the Internet cannot?

Specifically:

  1. In what ways is Substack better, and in what ways is it worse in your experience?
  2. What are the limitations of Substack?
  3. Particularly for those of you who did migrate over to Substack, how complicated was your experience?

Thank you very much in advance!

Two Sides of the Same Model

Yesterday’s post and today’s post are really talking about the same thing (or the same model, to be a little bit pedantic), but it’s a little bit like that story about the blind men and the elephant.

Which model? This one:

The Solow–Swan model or exogenous growth model is an economic model of long-run economic growth. It attempts to explain long-run economic growth by looking at capital accumulation, labor or population growth, and increases in productivity largely driven by technological progress.

https://en.wikipedia.org/wiki/Solow%E2%80%93Swan_model

Ask yourself a simple question: which countries in the world today are likely to see reasonably rapid growth over the course of the next three decades or so?

As a person whose job it is to teach people introductory economics, I’m not as interested in your answer as much as I am in your framework for coming up with your answer. No matter whether you say India, or China or Nigeria or Indonesia or any other nation of your choice – why do you choose the set of answers that you do? What is your model for doing so?

And whatever model you come up with, and whatever specification of the model you deem most appropriate, it should have the following ingredients:

  1. People. No country can grow if its labor-force isn’t growing. Duh.
  2. Capital. More machines, more output. Also duh.
  3. Technological progress. It’s not just people and machines, but it is how efficiently you use them, and the quality of your ideas about how to use them. Not so duh, and often underrated.
  4. Quality of education. A close cousin of the third point, if you think about it. Definitely not duh, and a pet passion (and peeve!) of mine.
  5. Quality of institutions. See this video for an explanation. The very opposite of duh, and massively underrated almost always.

So: my pick for a country that is to grow rapidly over the course of the next three decades would have to tick most, if not all of these boxes. And yesterday’s post was about understanding the point that where India is concerned, her rate of growth is somewhat likely to be constrained by her inability to dispense quality education efficiently and at scale, and by the quality of her institutions. We also need to ramp up our capital stock (our infrastructure). Or put another way, if we try to maximize growth without getting these things right, it’s going to create more problems for us down the road.


A warm welcome to Shruti Rajagopalan, who launched her Substack yesterday. Her first post, and indeed her general focus on her entire blog, is about paying more attention to India. Bad puns that are actually good is an underappreciated art form, so a high five is in order for the name of the blog too! (Update: Mihir Mahajan very kindly pointed out that this is actually a song. I obviously hadn’t heard it before, and in case you haven’t either, here you go. Thanks, Mihir!)

Her post is about a lot of things about why (and how) one should pay more attention to India. But the first two sections of her essay are what I want to focus upon here:

  1. “India’s population will peak in 2065. Compare this with China, where the population will peak next year.”
  2. “Smartphone penetration in India since 2010”

If Gulzar Natarajan yesterday spoke about capital, the quality of education and the quality of institutions (2,4 and 5 from my list above), think of Shruti’s post as a discussion about people and technological progress (1 and 3 from my list above). And a great way to learn about the Solow Model is to first learn about it, and then think about India in the context of the Solow model. Which, of course, is what these two posts are trying to do.

Take, in other words, the model out of the diagrams and the math, and apply it to the world around you. And a great place to begin is here, in India!


Shruti’s post is worth reading (and worth using as a teching tool) because it also speaks about labor mobility (or the lack of it), and capital mobility also. And soft power too, if you want even more! So do give it a read, and bookmark her blog, or add it to your RSS reader.

P.S. The very last section of her blogpost speaks about how to get started on learning more about India. I’d add at least two points to her list, the first because it is a passion of mine. If you want to learn more about any country, learn more about its food. Which ingredients are used at what time of the year, and why? What are the popular dishes in different parts of that country, and why? What do food taboos and food habits have to do with the culture, the sociology and the religions of that country? It’s a great way to learn more about different countries, and especially true for India. If you haven’t seen the light yet, and are therefore not as besotted with food as I am, consider music instead.

Or dance, if you like. Or textiles. But pick an entry point that you like, and read/see/travel optimizing for that entry point. But most of all, haffun – that’s the whole point, after all.

And for anybody who’s struggling with the Solow Model, trust you me, you can have fun while slogging through it all. This post is the proof!

Ethan Mollick is Now on Substack

Who is Ethan Mollick?

Ethan Mollick is an Associate Professor at the Wharton School of the University of Pennsylvania, where he studies and teaches innovation and entrepreneurship. He is also author of The Unicorn’s Shadow: Combating the Dangerous Myths that Hold Back Startups, Founders, and Investors. His papers have been published in top management journals and have won multiple awards. His work on crowdfunding is the most cited article in management published in the last seven years.
Prior to his time in academia, Ethan cofounded a startup company, and he currently advises a number of startups and organizations. As the Academic Director and cofounder of Wharton Interactive, he works to transform entrepreneurship education using games and simulations. He has long had interest in using games for teaching, and he coauthored a book on the intersection between video games and business that was named one of the American Library Association’s top 10 business books of the year. He has built numerous teaching games, which are used by tens of thousands of students around the world.

https://mgmt.wharton.upenn.edu/profile/emollick/

Here is the Interactive (that’s the name of the site, hence the capitalization) website, and it has a lovely little pun for its title. Here is his Google Scholar page, and here is his academic page. He doesn’t have a Wikipedia page, but here is an interesting Twitter thread about Wikipedia written by him. And if you insist on a Wikipedia page, well, you have to qualify to be able to read it. Can you eat glass? Here is a tweet by him, it’ll allow you to make progress on following Ethan Mollick on all platforms.

In short, Ethan Mollick is that all-too-rare example of a person who is consistently interesting, and from whom you’ll get to learn a lot. And he is now, as I mentioned, on Substack.

His first post on Substack tells you how to be more creative, and if I may be allowed to paraphrase his advise, it boils down to chilling and sleeping. That’s the kind of under-rated advice the world really needs right now!

The sleep suggestion is important. It is really clear that sleep is critical to successful idea generation, especially in the context of making entrepreneurs more creative. The effects go beyond just creativity, however. People who are sleep-deprived not only generate lower-quality ideas but become bad at differentiating between good ideas and bad ones. Worse still, research shows that sleep-deprived individuals become more impulsive and are more likely to act on the bad ideas they generate. That means that a chronically sleep-deprived person would be more likely to come up with bad ideas, think they are good, and suddenly quit their job to pursue them! So, creativity starts with a good night’s sleep, and if you can’t manage that, a 75-minute nap has been found to do almost as a good a job in putting people in the right frame of mind to be creative.

https://oneusefulthing.substack.com/p/how-to-be-more-creative

And as a bonus, he says you can hurry your creativity along by having more coffee!


The world needs more people who are interesting, helpful, creative and interested in making the world progress. Please do follow Ethan Mollick wherever possible, and learn how to help make the world a more interesting, and therefore better, place. What else is there in life, no?

Etc: Grandmothers, writers, Robert Solow (among others)

I recently had the honor (and pleasure) of meeting Paul Seabright, and to prepare for the meeting, I read, after many years, In The Company of Strangers. Hopefully, a review will follow soon. But there were a lot of interesting snippets in the book that led me down many a random trail in the jungles of the internet. They explain some of the links that have been chosen for your reading pleasure today.
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  1. “Defined broadly, menopause is the programmed end of fertility in a female animal. Human women, of course, are well aware that their fertility will decline with age and cease after a certain point, typically around age 50. In the animal kingdom at large, however, menopause is an oddity — and a long-standing evolutionary mystery. An organism’s ultimate goal is reproduction. Why sacrifice that consummate purpose? Even more puzzling, why would an animal naturally become infertile and then go on living for years? Throughout history, scientists have proffered numerous theories. But studying the biological phenomenon of menopause is difficult, in part because it seems to be so rare.”
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    Paul Seabright mentions this briefly in his book, and this article explains why menopause is so very important for the human species.
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  2. “I’ve often thought to myself that if Substack had existed when I’d first started writing, I might have approached my work very differently. As a writer who built an audience around a niche topic, I’ve wondered why it is so hard to make money directly off of one’s work. I’ve been lucky that my interests overlapped with the software industry, but what if I’d been obsessed with cataloging perfumes instead, or the causes of Britain’s Industrial Revolution? Many content creators are now able to strike out on their own, thanks to platforms like Instagram, YouTube, and Twitch, but writers, journalists, analysts, researchers, curators, and other independent obsessives mostly seem to make money by indirectly translating their reputation into something they can get hired for.”
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    This is something I’m only very vaguely thinking about right now – starting a much more systematic newsletter than I currently manage at the moment. Folks who read this blog via email, please feel free to drop me an email explaining what you like about it, what you don’t, and what else I could do. Thank you.
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  3. ““I think the way people do economics today is too much governed by the availability of data,” he says. “A lot of the articles that I see written in the journals seem to exist not because there is a problem here that needs to be solved, or a puzzle that needs to be explained, but because I have come upon this enormous bunch of data, [and figure] these data have to include the answer to some question.” But, he adds, that’s “natural,” given the sheer amount of data on hand and the pressure to publish.”
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    Amruuta, on Twitter, was kind enough to share this link with me, about Robert Solow, his long and justly celebrated career, how good he has proven to be as a mentor, and so much more.
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  4. The amazing – a word entirely appropriate in this case – Scott Alexander on what he learnt in this past decade.
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    “There’s an argument that I should learn less each decade, since I’ll be picking higher and higher fruit. My own knowledge can advance either because civilization advances and I hear about it, or because I absorb/integrate older knowledge that I hadn’t noticed before. Civilization advances at a decade per decade (or maybe less; see the Cowen & Southwood paper above), but each year it becomes harder and harder to find relevant older knowledge that I haven’t integrated yet. I plausibly only have five more decades to live, and I don’t think I’d be happy only advancing five times this amount over the rest of my life, let alone less than that.”
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  5. “The key thing about human beings is that our environment is as much each other as it is a particular natural ecology, and that component of our environment, the social component, has changed spectacularly in the last ten millennia. Therefore, the things we do can’t possibly be explained in a very simple way as having evolved through ordinary natural selection for the environment in which we find ourselves today. So we have to patch together an argument consisting of two parts. The first part is to say: What do we think human beings were like, physically and psychologically, as a result of their evolution in the African woodland savannah until about 10 millennia ago? Then we have to ask: How can we imagine that you launch that set of capacities out on the open sea of human social interactions where suddenly things get fantastically complicated, we start dealing with situations we never had to deal with before, with modern society as the result.”
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    I thoroughly enjoyed reading, once again, In The Company of Strangers. An interview with Paul Seabright about the book, and some other things besides.