Mark Lewis is the Director of Product Strategy at Slalom Digital, a San Francisco-based digital innovation and product development shop. He is also the founder of Planning-ness, an un-conference for creative thinkers.
All content is copyright their rightful owner. Republication of PSFK content should be properly credited (and linked to) as the source, including our URL: psfk.com. Consult other content owners directly about republication of their content.