The cost to the commons is pretty substantial though. One person sleeping on a bench vs 5 people sitting, a subway car with 50 people vs a subway car with one a

The cost to the commons is pretty substantial though. One person sleeping on a bench vs 5 people sitting, a subway car with 50 people vs a subway car with one and the smell of death. These kind of features address practical concerns, concerns that won't go away unless you spend the capital (political and fiscal) to address the core issues.