Scott Alexander, curated
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Highlights From The Comments On Piketty

Quality
66
Strong
Claude Shift
44
Moderate
RWI
2
of 10

Follows up on

Book Review: Capital In The Twenty-First Century — Book review · Jun 2018

Summary

A Highlights-From-The-Comments post on his Piketty review, curating and synthesizing the strongest commenter contributions: Rognlie's capital-depreciation correction (100% of recent capital-share growth is HOUSING, which weakens the rising-rentier thesis since most homeowners live in their homes); detailed answers to the 'why can't poor people pool money for rich-people returns?' question (private equity access, risk tolerance, time horizons, the Magellan-fund behavior gap); Magness's critique that Piketty cherry-picked the most dramatic inequality datasets and under-corrected for tax-code changes (the U-curve is really a 'tea saucer'); and various r>>g and GDP-growth debates (Paul Christiano's r=g accounting-identity reductio). Scott's takeaways: the super-rich-get-much-better-returns claim and the rising-rentier-class thesis don't really hold up, and Piketty used the most dramatic data available.

Why this score

Quality 66 · Strong. A substantive Highlights-From-Comments post curating a genuinely good economic-critique debate (Rognlie's housing point, the Magness tea-saucer critique, the r=g reductio) with sharp synthesizing takeaways, but a comment-curation format. Strong-low.

Claude’s paradigm shift 44 · Moderate. Curates and synthesizes others' critiques rather than originating them; modest novelty in the framing. Moderate.

Real-world impact 2 · Minor. A within-discourse highlights post; no material-world effect. Within-blog influence.