First, you should know that I love science. But I am not, well, religious about science. I believe that science only ever tells us partial knowledge. Really, that's the whole point of science. It's a method of learning - and you never, ever, know everything. Alas, scientists often forget how much they don't know, especially when working with, say, poor, often illiterate, women farmers in Rwanda. Which was the location where some mighty fine beans broke some ancient barriers.