A large gathering consumes a day rather than the period it runs for. The difference sits at both ends and the two ends are not equal. Arriving is the manageable half. Because it spreads across a period rather than happening at once. The asymmetry. The consequence. Counterintuitive. Peak. Which means the hour saved by setting off later gets paid back with interest. The practical point. The three factors. The third is the one nobody asks about and the one that decides the evening. A space close to the venue is frequently the last one able to leave. Geography. Inverted. Orientation. The cost. The walk is always longer than whatever was stated. The implication. The second half. Everybody departs within the same short period. Which produces a journey out that occasionally exceeds the journey in. Three responses exist and all three work. The first. Which costs the conclusion and saves the worst of it. The second. Delay. Which is the option most people how early should you arrive at a large event at after one bad experience. The third. The trade. The timing. The reason. The default. The practical remedy. Which is a small amount of carrying for a substantial return. The last point. Because coverage fails in a crowd of that size. And a plan that depends on messaging is not a plan. The requirement. Those who got out in a sensible time generally parked facing the way out rather than facing the venue.