In the midst of a high-stakes monopoly trial, Meta CEO Mark Zuckerberg offered a perspective on social media that appeared to strategically narrow its definition. Facing allegations that Meta holds an illegal monopoly over personal social networking services, Zuckerberg's testimony seemed designed to reframe the competitive landscape. Instead of emphasizing the broad public sharing and network effects often associated with platforms like Facebook and Instagram, his arguments leaned towards characterizing social media primarily as a tool for private communication, akin to texting with friends and family. This subtle but significant shift in definition could have major implications for how the court assesses Meta's market power. The core of the government's case often rests on defining the relevant market. By suggesting that the essence of social media lies in private, one-to-one or small group interactions, Zuckerberg potentially broadens the competitive field to include messaging apps like iMessage, Signal, Telegram, and even standard SMS. If the court were to accept this narrower definition focused on private communication, Meta's market share within that redefined space might appear less dominant than if the market is defined more broadly to include public content sharing, news feeds, and large-scale social graph connections. This definitional maneuvering is a common tactic in antitrust litigation, where establishing the boundaries of the market is a critical first step. Furthermore, Zuckerberg reportedly placed significant emphasis on the competitive threat posed by platforms like TikTok. Highlighting rivals, especially rapidly growing ones popular with younger demographics, serves the narrative that Meta operates in a dynamic and fiercely competitive environment, rather than enjoying entrenched monopoly power. Pointing to TikTok, a platform known more for short-form video entertainment than private messaging, adds another layer to the argument, suggesting competition exists across different formats and functionalities. The strategy appears to be twofold: narrow the definition of Meta's core function to something with many competitors (private messaging) while simultaneously highlighting strong competition in adjacent areas (video entertainment). This redefinition during testimony contrasts sharply with how Meta has historically presented its platforms and their value proposition to users and advertisers. Facebook's success was built on connecting large networks of people and facilitating public or semi-public sharing, while Instagram thrived on visual content broadcast to followers. While private messaging features exist within Meta's apps (Messenger, WhatsApp, Instagram DMs), framing them as the central pillar of 'social media' represents a notable pivot during legal scrutiny. Legal experts and observers are watching closely to see if this reframing resonates with the presiding judge, who must ultimately decide whether Meta's portrayal of the market aligns with the reality of consumer behavior and industry dynamics. The source material suggests skepticism, noting the judge 'may not buy it'. Ultimately, the debate over defining 'social media' is central to the outcome of the trial. Zuckerberg's testimony underscores the strategic importance of language and market definition in antitrust battles. Whether this attempt to characterize Meta's platforms primarily as sophisticated texting services succeeds in mitigating concerns about monopoly power remains uncertain. The court's interpretation will hinge on a complex analysis of user behavior, platform functionality, and the perceived interchangeability of different digital communication and entertainment services. The trial's progression will continue to shed light on how tech giants define themselves under pressure and how regulators and courts interpret the evolving digital landscape.