An Economist Answers Some of My Questions About “Capital in the 21st Century”


On Thursday I posted a couple of very rudimentary comments regarding Thomas Piketty’s blockbuster new book, Capital in the 21st Century. I had questions about Piketty’s estimates of r (return on capital) and g (economic growth) in the past and—much more importantly—how they were likely to play out in the future. But all I had were amateur musings because I am, after all, only an amateur.

However, yesterday Brad DeLong tackled some of the questions I asked in a far more rigorous and disciplined way, teasing out a lot of unstated implications along the way—including the importance of various measures of r and how they relate to the probability of increasing future wealth concentration in the real world. It’s a long post, and complex in places, but highly recommended. If you’re willing to work your way through it, DeLong provides a framework for thinking about Piketty’s model that helps you start to make sense of both the book and its conclusions.

POSTSCRIPT: I’ve gotten a couple of questions about why I seem unduly skeptical, or even harsh, about Piketty’s book. It’s obviously a landmark work, I don’t really mean to be unfair. But it’s a book with innovative and untested ideas that has obvious appeal to anyone left of center, and I think this is precisely the time to avoid unquestioning hosannas. Affinity bias makes us all sympathetic to Piketty’s arguments, and that’s why we should instead question it carefully and thoroughly.

SIX TRUTHS

Reclaiming power from those who abuse it often starts with telling the truth. And in "This Is How Authoritarians Get Defeated," MoJo's Monika Bauerlein unpacks six truths to remember during the homestretch of an election where democracy, truth, and decency are on the line.

Truth #1: The chaos is the point.

Truth #2: Team Reality is bigger than it seems.

Truth #3: Facebook owns this.

Truth #4: When we go to work, we're in the fight.

Truth #5: It's about minority rule.

Truth #6: The only thing that can save us is…us.

Please take a moment to see how all these truths add up, because what happens in the weeks and months ahead will reverberate for at least a generation and we better be prepared.

And if you think journalism like Mother Jones'—that calls it like it is, that will never acquiesce to power, that looks where others don't—can help guide us through this historic, high-stakes moment, and you're able to right now, please help us reach our $350,000 goal by October 31 with a donation today. It's all hands on deck for democracy.

payment methods

SIX TRUTHS

Reclaiming power from those who abuse it often starts with telling the truth. And in "This Is How Authoritarians Get Defeated," MoJo's Monika Bauerlein unpacks six truths to remember during the homestretch of an election where democracy, truth, and decency are on the line.

Truth #1: The chaos is the point.

Truth #2: Team Reality is bigger than it seems.

Truth #3: Facebook owns this.

Truth #4: When we go to work, we're in the fight.

Truth #5: It's about minority rule.

Truth #6: The only thing that can save us is…us.

Please take a moment to see how all these truths add up, because what happens in the weeks and months ahead will reverberate for at least a generation and we better be prepared.

And if you think journalism like Mother Jones'—that calls it like it is, that will never acquiesce to power, that looks where others don't—can help guide us through this historic, high-stakes moment, and you're able to right now, please help us reach our $350,000 goal by October 31 with a donation today. It's all hands on deck for democracy.

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate