Leif Abraham is a Partner at Prehype, a venture development firm in New York City._His latest e-book “Madison Valley” focuses on_building digital products_and_how Madison Avenue can be more like Silicon Valley. For the first several years of my career I never had a job title. And even today it always feels kind of wrong to put myself into a box. My skills are relatively broad and I think I could adapt to any task (if I want to). I wouldn’t be the_expert in the field – you probably shouldn’t ask me to operate on someone – but what I can...

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