Why did Habermas think communication requires people to treat one another’s statements as open to reasons?

Jürgen Habermas argued that communication inherently aims at mutual understanding and agreement rather than the strategic manipulation of others. For this process to function, participants must assume that their interactions are governed by reason and evidence rather than nonrational coercion.123

Habermas contended that the everyday capacity to coordinate human action would be impossible if individuals did not take for granted the validity of most utterances they interpret. Consequently, communication requires participants to treat statements as open to reasons because:2

• Intersubjective Validity: To reach agreement, individuals must be able to raise, accept, or reject claims to truth, rightness, and sincerity based on the "unforced force" of the better argument.1
• Ideal Speech Situation: He proposed that rational consensus presupposes an "ideal speech situation," where participants evaluate assertions solely through reason, free from physical or psychological coercion.3
• Discourse Ethics: In his theory of discourse ethics, Habermas posited that norms are only valid if they could meet with the approval of all affected parties, provided everyone has an equal opportunity to offer reasons and arguments.2

Ultimately, this framework serves as a critical ideal for evaluating democratic institutions and public discourse.13