I think that the economics of book publishing favor hits with long book runs. You make all your money on the last bunch of books, not the first.
Seth GodinHow often do our heroes stand still? It's hard to imagine Spock and Kirk landing on a planet and just relaxing for a month or two. Just hanging out has nothing to do with boldly going where no one has gone before. What makes us different from every other creature is that we go places, places we've not gone before. We do it willingly, and often. What makes our work and our life interesting is discovery, surprise, and the risk of exploration.
Seth Godin