If I kill someone and rob them of the next 50 years of their life, how long should I be in prison for? This guy, statistically, was involved in a scheme that

If I kill someone and rob them of the next 50 years of their life, how long should I be in prison for? This guy, statistically, was involved in a scheme that robbed a whole lot more people of a whole lot more years than that due to the effects if pollution on public health.