Mastering the Complex SalePraise for Mastering the Complex Sale "Jeff Thull's process plays a key role in helping companies and their customers cross the chasm with disruptive innovations and succeed with game changing initiatives." Geoffrey A. Moore, author of Crossing the Chasm and Dealing with Darwin "This is the first book that lays out a solid method for selling cross company, cross border, even cross culturally where you have multiple decision makers with multiple