Dave Rubin opens by examining how groupthink and tribal political and social affiliations can undermine genuinely independent thought, encouraging conformity to group positions over individually examined conclusions.

Why Rubin identifies this as a significant problem:

• Strong tribal group identity can create pressure to adopt the group's positions wholesale, discouraging genuine independent examination of specific issues
• This dynamic operates across the political spectrum, not limited to any single ideological group, according to Rubin's account
• Recognizing this pressure, drawn partly from his own personal experience shifting away from previously held political affiliations, is presented as a necessary first step toward more genuinely independent thinking

This opening establishes the book's central concern with intellectual independence amid strong social and political tribal pressures.