Discovery of explicit solution formulas for Polynomial eq. a₀xʲ+a₁xʲ⁻¹+…+aⱼ=0 j=2 Pythagoras (500 BC) j=3 Girolamo Cardano (1545) j=4 Lodovico Ferrari (1540) j≥5 No general formula exists, Niels Abel (1824)
Anne Case and Angus Deaton show how much the US outspends other countries on health care, and how little health there is to show for it. From their forthcoming book Deaths of Despair from @PrincetonUPresspic.twitter.com/X7gDfFOxBB
