Knowing when to use a comma and when to use a semicolon does n't make you a fiction writer , but any fiction writer who thinks the difference between a comma and a semicolon is irrelevant / silly / beneath them is n't likely to be any good . All a writer has is words , and every punctuation mark , every pause , makes a difference . True , there are copy editors and proofreaders out there who can correct your grammar and punctuation , and occasionally one does run across a gifted fiction writer who looks like they could n't pass freshman comp .

Question: Based on this post , what may be my profession ?
Answer: ArtistAuthorSoftware engineerMechanic