(A lot of typos in the earlier post; was distracted. I'm sure colors are a stand-in for whatever, but the argument doesn't change.) I saw the movie Pandemonium (made in 2000, Netflix) about the rivalry between William Wordsworth and Samuel Coleridge. They made Wordsworth out to be pretty dastardly, which I had no idea, if it's true. (It could be like the movie Amadeus and their depiction of Salieri, except it was a BBC movie.) The interesting part though, was that Dorothy Wordsworth, his sister, contracted some sort of illness that caused her Alzheimer's-like symtoms while in her 50's. Nobody knows exactly what caused the illness, but medical archeology thinks that it was a thiamin deficiency, a B vitamin. I know beri beri was common in the 19th century after refining of grains became widespread. Deficiency diseases (beri beri, pellagra, rickets) were eliminated with white flour enrichment in the early 20th century. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1296818/pdf/jrsocmed00023-0050.pdf Andy