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.
Here's the point to be made - there are no synonyms. There are no two words that mean exactly the same thing.
I learned how to live on five and sometimes ten dollars a week.
Basically, fiction is people. You can't write fiction about ideas.
I've always written very tightly, and there's a good reason for that. There's no point in using words that you're not going to apply.