For the cost to develop the polio vaccine, March of Dimes could have bought enough iron lungs to save 12,000 lives. Of course, they had no idea what the actual number would be beforehand; all they knew is that they were spending enormous sums of money on something that could turn out to be a catastrophic waste, rather than saving thousands of lives. At the end of the day, they felt that was a worthwhile risk. With hindsight, we can see that they right.