Core Viewpoint - The article discusses the evolving nature of writing, highlighting how AI-generated content increasingly resembles human writing, while human writing is becoming more standardized and formulaic, akin to AI [1][85]. Group 1: Characteristics of AI Writing - AI writing is characterized by efficiency and cleanliness, lacking redundancy and excess, resembling an "industrial beauty" [6][12]. - AI-generated text tends to be overly standardized, lacking the unique imperfections that characterize human writing [13][15]. - AI often employs clichés and formulaic metaphors, which can make its writing feel generic and machine-like [21][24]. Group 2: Characteristics of Human Writing - Human writing is often filled with redundancy, which contributes to individual style and emotional depth [10][15]. - The writing process for humans is nonlinear and associative, allowing for emotional and imaginative expression [32][38]. - Human writers often use metaphors to convey complex ideas, reflecting their struggle to articulate thoughts clearly [25][27]. Group 3: Differences in Summarization - Human summarization is reflective and inductive, emerging from experiences and emotions, while AI summarization is structured and deductive, focusing on clarity and efficiency [47][48]. - AI prefers clear, bullet-pointed structures and tables, which can make its output feel overly simplistic and lacking depth [52][66]. Group 4: Identifying AI Writing - AI writing lacks personal touch, often avoiding the use of first-person perspectives and personal anecdotes [63][64]. - AI-generated content tends to have uniformity in length and structure, contributing to its mechanical feel [65][66]. - AI maintains a neutral stance, rarely expressing strong opinions or emotions, which can make its writing feel detached [67][68].