The same holds for a longer manuscript. I need to see that quality is maintained throughout, not to provide that quality. I need to see that the bricks fit together, not make or shape the individual brick.
It is so important that a writer learns early to be his own primary editor. He has to be able to recognize the smell of what he produces and measure that against what others make. He has to understand that you can't simply dry it out and give it a different shape. A brick made of sh_t is still pure sh_t and not much of a brick compared to other bricks.
So, before you hand me your crap, be aware of the smell of it. I may need it for fertilizer.