Passage Summary: People use more happy words on social media in the morning and evening than they do in the afternoon. Therefore, people must actually feel happier in the morning and evening than they do in the afternoon.

Conclusion: A person's internal mood typically follows a specific daily cycle of starting happy, dipping in the afternoon, and rising in the evening.

Reasoning: An analysis of social media posts shows that the use of positive words follows this exact temporal pattern throughout the day.

Analysis: This argument falls into the trap of assuming that outward expression (social media posts) is a perfect mirror of internal reality (actual mood). It overlooks the possibility that people might perform a certain persona online regardless of how they feel, or that the people who post in the afternoon are a different group than those who post at night. Look for an answer that suggests the language used in a post might not accurately reflect the poster's true emotional state.