Nitpick: it is one life per year for the billion invested. Which after the typical metro infrastructure lifespan of a century is actually viable because the cost for a working-age US life in medical and other contexts is probably around the $10mn ballpark.
(Assuming financing happens cheaply by the federal state rather than via PPP grift; and assuming that $50bn is the number, which in NYC is an underestimate by a factor of at least five…)
(Assuming financing happens cheaply by the federal state rather than via PPP grift; and assuming that $50bn is the number, which in NYC is an underestimate by a factor of at least five…)