Masters is chairman of the Food and Nutrition Policy Department in the Friedman School of Nutrition at Tufts. He says more often than not, so-called miracle crops like moringa or breadfruit are distractions. "Why [is] it that it didn't get identified as a huge success previously?"
In other words, it's not like farmers haven't tried many of these crops before. Farmers experiment. They'll plant something new, and see how it does. And, over the years, many of these so-called superfoods failed for the most mundane of reasons. They take too long to grow, require too much labor or are prone to pests. It's not as easy to spread breadfruit as wheat.
"That search across all the available biodiversity has been going on for thousands of years," Masters said, "and it's led to a system that has found a half dozen or dozen major species that feed the world. And that's because those major species have some pretty amazing characteristics."