The time spent working on a long novel is important, to be sure, but time spent doing nothing is no less so. The same principle applies to a factory or a construction site: manufactured goods are left to settle before being shipped, and concrete is cured in the open air before being built upon. It is through this process that materials are allowed to set or dry out. The same thing holds true with novels. If you fail to let a novel sit for a certain length of time, the parts won’t adhere, or will fail to dry and therefore be weakened.