If you're in New York, the Met currently has an exhibit on Matisse's process of making multiple versions of the same painting: classic A/B tester :) http://www

If you're in New York, the Met currently has an exhibit on Matisse's process of making multiple versions of the same painting: classic A/B tester :) http://www.metmuseum.org/exhibitions/listings/2012/matisse?utm_source=homepage&utm_medium=banner&utm_campaign=matisse http://www.metmuseum.org/exhibitions/listings/2012/matisse?u...