Husband-and-wife team Masamichi Udagawa and Sigi Moeslinger have thrived as creative partners, designing everything from New York subway cars to a Knoll furniture line. Scott Belsky (Behance) and Josh Rubin (Cool Hunting) chat with the duo about what makes for a great partner and the advantages of teaming up – for instance: faster thinking, productive friction, and more creative firepower. From the99percent.com.