Last week the New Yorker’s fiction department serial tweeted Jennifer Egan’s story “Black Box,” [3] which appears in the magazine’s science fiction issue. Egan structured her story in prose bursts of 140 characters or fewer—the limit for a single tweet. Challenge yourself to write a story that could appear in small installments by shortening the length of the story’s paragraphs to one or two sentences. Try to advance the story with each terse paragraph.