中原よ。
地球は冬で寒くて暗い。
ぢゃ。
さやうなら。
Nakahara, friend!
The earth is wintry, cold and dark.
Well then, good-bye.
The Environmental Protection Agency allows concentrations of 400 ppm Pb in soils where children play and 1200 ppm in other areas of bare soil. The EPA doesn't have specific standards for a safe level of soil lead, but various organizations and researchers have attempted to come up with a number - somewhere between 300 and 600 ppm. No doubt, the soil around the Cathedral is toxic and the place should be closed to tourists, or maybe, tourists allowed for short visits while protected by face-masks with anti-dust filter. Maybe Parisians should start to wear industrial dust-masks in the street, like the inhabitants of Beijing. Left: Graph showing the concentration of lead particles in the air and the weather, in Detroit. Dry weather allows dust to contaminate the air and children's blood. All the soil in Paris and its buildings are contaminated and until decontaminated, unfit for human habitation.Digital versions of labor and capital can be reproduced much more cheaply than their traditional forms. This increases the supply and reduces the marginal cost of both labor and capital. What then, if anything, is becoming scarcer? We posit a third factor, ‘genius’, that cannot be duplicated by digital technologies. Our approach resolves several macroeconomic puzzles. Over the last several decades, both real median wages and the real interest rate have been stagnant or falling in the United States and the World. Furthermore, shares of income paid to labor and capital (properly measured) have also decreased. And despite dramatic advances in digital technologies, the growth rate of measured output has not increased. No competitive neoclassical two-factor model can reconcile these trends. We show that when increasingly digitized capital and labor are sufficiently complementary to inelastically supplied genius, innovation augmenting either of the first two factors can decrease wages and interest rates in the short and long run. Growth is increasingly constrained by the scarce input, not labor or capital. We discuss microfoundations for genius, with a focus on the increasing importance of superstar labor.