Slow persuasion

What are the value and form of optimal persuasion when information can be generated only slowly? We study this question in a dynamic model which 'sender' provides public over time subject to graduality constraint, decision-maker takes an action each period. Using novel 'viscosity' programming principle, we characterise sender's equilibrium function provision. show that constraint inhibits provision relative unconstrained persuasion. The gap substantial, but closes as slackens. Contrary persuasion, less-than-full may provided even if players have aligned preferences different prior beliefs.