An Opinionated Guide to Folk ArtSculpted with furniture offcuts, embroidered onto samplers, sketched in the margins, painted on cardboard in time snatched after work Art is not only made inside academies and institutions by people with money and training, though sometimes the canon suggests otherwise. From a Japanese farmer's coat stitched from scrap fabric to Ralph Fasanella's paintings, these 67 artworks challenge our preconceptions about what constitutes art, how it should be