In the mid-twentieth century, income and wealth inequality was declining, leading to an era of comparative economic equality and a large middle class. But since the early 1980s, income and wealth inequality has been on the rise. The 100-year life describes how increasing life expectancy could transform the course of individual lives in detail – but how does this trend intersect with our age of inequality? And what does it mean for law and policymaking more generally? The dark side of rising life expectancy is that it is unequally shared. The first part of this chapter briefly discusses how age and inequality are connected – that is, that not everyone shares in rising life expectancy equally and that those who are living longer share many common attributes. The second part considers the possible impact of the skew in rising life expectancy on representative government. Inequality skews politics to favor the wealthy; inequality by age will likely do the same. The fundamental problem is that power is held unequally in most societies. The third part, on age and institutional design, outlines some ways in which political structures might be crafted to account for age-related differences.