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Twitter trying to lock the exits makes me nervous
Or why I'll start using Substack more and twitter less
Apr 9, 2023
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John Horton
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Twitter trying to lock the exits makes me nervous
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August 2020
Digital Economics
Thoughts on economics online, by John Horton
Aug 23, 2020
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Digital Economics
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November 2018
Empirics in the very long-run
Much of my empirical work uses proprietary data from firms. I'm fully aware of the problem this creates for science---my work is, by and large, not…
Nov 4, 2018
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John Horton
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Empirics in the very long-run
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October 2018
Celebrating RJZ's 50 years of teaching at Harvard
This weekend attended a celebration of Richard Zeckhauser's 50 years of teaching at Harvard. The event started with two panels focusing on different…
Oct 22, 2018
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John Horton
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Celebrating RJZ's 50 years of teaching at Harvard
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May 2018
Why I don't like going to academic conferences
Academics go to academic conferences. I generally go to a few each year---always the AEA and NBER Summer Institute, usually SOLE (Society of Labor…
May 5, 2018
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John Horton
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Why I don't like going to academic conferences
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January 2018
Extending geofacet to algorithmically generate grids from lat/long data
This morning I learned about the very cool geofacet R package for making geographic facets with ggplot2. Unfortunately, my cities aren't one of the…
Jan 28, 2018
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John Horton
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Extending geofacet to algorithmically generate grids from lat/long data
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December 2017
Bartik instrument exploration in R
Paul Goldsmith-Pinkham and co-authors have a nice paper on "shift share" or Bartik instruments that I'm working my way through. Whenever I'm doing some…
Dec 16, 2017
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John Horton
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Bartik instrument exploration in R
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June 2017
The problem with "it's just an app"
Middlemen seemingly exist just to get "cut out." Online marketplaces like Airbnb and Uber are described as middlemen, and I frequently read about how…
Jun 6, 2017
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John Horton
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The problem with "it's just an app"
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May 2017
Why I think ride-sharing companies will win the self-driving future
There is growing interest in who will dominate the self-driving future: car companies, ride-sharing companies or someone else? My bet is on ride-sharing…
May 18, 2017
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John Horton
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Why I think ride-sharing companies will win the self-driving future
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AI, Labor, and the Parable of the Horse
Today I attended the 5th year anniversary celebration for MSR NYC. There was a great group of speakers and panelists---I'm super impressed by what MSR…
May 10, 2017
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John Horton
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AI, Labor, and the Parable of the Horse
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April 2017
How would we know if "The Bay Area Should Levy a 5% Equity Tax on Startups"
In a recent Information article, Sam Lessin proposed a Bay Area 5% equity tax on startups. It's an interesting idea; I don't know whether it's "good…
Apr 24, 2017
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John Horton
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How would we know if "The Bay Area Should Levy a 5% Equity Tax on Startups"
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2SLS in Mathematica
2SLS data setup. Note that there is RV u that appears in both x and in the error term. There is also an IV, z, that affects x but not u. n = 10000; z …
Apr 23, 2017
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John Horton
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2SLS in Mathematica
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