Hello World!

This site is an attempt to bring some of my different posts in different social media and blogs that I want to preserve in one place, and to present new material on economics, photography, and whatever else interests me.

Who am I? The signatures of the posts here say I am “cogiddo”. This is an amusing (to me, at least) bit of wordplay I invented years ago, inserting my initials “dd” into the “cogito” of the famous Descartes saying cogito ergo sum. The name you would know me by in real life, however, is Dimitrios Diamantaras. More information on the About page.

This post will stay in top position. Please scroll down for every other post. To see all my posts in the “Economics” category, you can visit this page; for “Photography”, this page, and so on. For a live listing of categories, expand the Menu by clicking/tapping on the “Menu and Widgets” link on the upper right.

The Economics Nobel lectures

When we sat down for breakfast, I opened my iPad on Facebook, as usual at this time of day. I saw a notification from the Nobel Foundation that the Nobel lectures on economics were about to be streamed live. I had forgotten, in the hectic days of winding down the semester, to check for the schedule and I feel extremely lucky I got to watch these lectures by accident.

There was an unfortunate glitch with the audio which forced the stream to be stopped and restarted. As a result, I only got to watch properly the second half or so of the lecture by William Nordhaus, but the streaming of the lecture by Paul Romer went ahead after that without problems.

Both laureates gave great talks, I thought. Of course, I am biased in favor of Romer, as a former student of his. The same ability to explain deep, complicated mathematics that he displayed when I was taking his first-year mathematics-for-economists PhD course in Rochester in 1984 was evident in his engaging Nobel lecture. I particularly liked his one (and only!) slide beyond his cover slide, showing students in Africa reading their textbooks on the side of a highway near the local airport, because there were streetlights there, making it possible to study at night, while their houses had no such luxury

Romer went on to explain in very simple terms the way ideas and their sharing and combinations have made it possible for humans to make progress in material, as well as moral, terms. I was heartened by his talk about how technological progress has expanded the circle of people (and now other sentient beings) that many humans consider US rather than THEM.

Not a small contribution to human progress in both material and moral terms from Paur Romer, an undergraduate physics major who went on to get his PhD and launch his career by doing work that could have easily been considered too arcane, were it not for his commitment to share his ideas in the clearest possible terms for others to use and combine them for yet more ideas to help humans live better.

Long absence from this blog ends now with a post about how experiencing income inequality when growing up affects one’s preferences for income redistribution policies

The Fall semester has proved to be busier than I thought it would be. However, I really do want to come back to this blog, and a paper about inequality I encountered today gave me the push I needed.

The paper is Experienced inequality and preferences for redistribution by Cristopher Roth and Johannes Wohlfart, Journal of Public Economics 167 (2018) 251-262.

The authors use large national datasets to examine the following question: if someone experienced higher inequality when growing up, will they be more or less in favor of redistribution?

Their answer surprised me. Quoting from the abstract of the paper:

people who have experienced higher inequality during their lives are less in favor of redistribution, after controlling for income, demo- graphics, unemployment experiences and current macroeconomic conditions. They are also less likely to support left-wing parties and to consider the prevailing distribution of incomes to be unfair. We provide evidence that these findings do not operate through extrapolation from own circumstances, perceived relative income or trust in the political system, but seem to operate through the respondents’ fairness views.

(Roth and Wohlfart 2018, abstract)

People who grew up experiencing higher inequality demand less redistribution? Of course that is fine if you think of those in the top of the distribution, but the way inequality has developed in a skewed manner in most countries, the majority of the people should be in a less advantageous position and might be expected to have a desire for redistribution policy to reduce the inequality. But they don’t! The authors offer this potential explanation:

One plausible interpretation of these findings is that growing up under an unequal income distribution alters people’s perception of what is a fair division of resources, and thereby reduces their demand for redistribution.

(Roth and Wohlfart 2018, Page 252)

This is like thinking of slaves becoming used to the chains and eventually fond of them. I want to absorb the message of this paper more deeply, at least for my forthcoming class on economic inequality in the Spring 2019 semester, and if I have further thoughts to share on this blog, I will do so.

Sunset over the Seine

I recently visited Paris, France, and a few places nearby. I will post here a few of my better photos from that trip. If you follow me on social media, you may have seen a few on Facebook, Instagram, and Google Plus, but I will seek to also post some here that I have not posted elsewhere.

I start in this post with a photo of the sunset from a Champagne cruise on the Seine, made on June 30. Notable in this shot: Notre Dame, and some serious shade thrown by the clouds.

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