I always find that it's the most provocative assertions of others that help me get started writing something. Take, for example, this proposition from John Unsworth's oft-cited paper "Scholarly Primitives: what methods do humanities researchers have in common, and how might our tools reflect this?":

the most interesting things that you can do with standalone tools and standalone resources is less interesting and less important than the least interesting thing you can do with networked tools and networked resources