# Forskningsrön genom politiskt prisma. Intervju med 3 nationalekonomer

Hösten 2017 intervjuade jag tre nationalekonomer om spänningen mellan politik och forskning. Det var kul. Publicerad i Dagens ETC 25 december 2017.

# Notes on Acemoglu & Robinson: “The End of General Laws of Capitalism”

Acemoglu & Robinson (AR) published a text 2015 that was kind of like a comment on Piketty, but more a general comment on a lot of big things, Marx and other stuff. Strongly recommended reading. Here’s some notes, which is mostly quotes from AR.

# Roland Paulsens syn på arbete

Roland Paulsen, sociolog och debattör, har fått massa uppmärksamhet för att han tycker att vi (samhället) bör jobba mindre. Andreas Bergh skrev nyligen en hård kritik av tre av hans böcker varpå Paulsen i en replik påstår att Bergh sysslar med ärekränkning. Här är en sammanfattning.

# Notes on Piketty, capital and labor, theory and data

Piketty’s (2014) book Capital and associated articles contains a lot of fascinating stuff and has inspired a lot of interesting debate. Here are some summary notes. Please comment on errors. If you want to change the world, you need to know how it works.

The critique: Data and theory don’t support the r > g story, Piketty’s 2nd law, that low growth and high returns on capital will make K/Y increase in the future.

• Net savings rate does not seem to be stable in the long run and does not seem to correlate negatively with growth.
• Adjusted for valuation, K/Y doesn’t seem to have increased in the last decades, contrary to some of Piketty’s main findings.
• Piketty means that the elasticity of substitution between K and L ($\sigma$) is above 1, based on, among other things, data on K/Y. But if K/Y hasn’t increased, Piketty might also be wrong about $\sigma$. A lot of earlier empirical analysis indicates $\sigma$< 1. Also, for Piketty’s theory to hold, $\sigma$ might need to be much higher than Piketty suggests.

# Will Homo Economicus work less in the future?

Timo Boppart and Per Krussell (BK) did a really interesting paper last year on the past and future of work hours. More people should read it and I want to understand it, so here is some simple summary notes.