The best science fiction is as good as the best fiction in any field.
They say dogs ignore their reflections in mirrors because they can't smell them. Dogs, unlike people, are not fooled by what they see.
Writing is a communication.
Ninety percent of SF [science fiction] is crud, but then, ninety percent of everything is crud.
Ask the next question.
It's the Simple things that are really effective. Try to remember that.