One of the most profound contradictions of modern America is that more than 45 million Americans don’t have enough to eat, but the country wastes an estimated 40 percent of its food. The forces fueling this paradox are complex: Grocery stores think they’ll assume legal liability in donating food. Farmers allow edible, but homely fruit to rot in fear it won’t sell. Bananas blacken on all our shelves. But the reasons behind this waste didn’t…