In 2026, twelve stadiums across the US, Mexico, and Canada will host 10.4 million fans. Each venue processes 60,000 souls through security checkpoints, concession lines, and seat allocations in under 90 minutes pre-game.
That's the throughput we need for Mars. One dome, 14-week cycles, zero margin for error. The math is identical: crowd density × dwell time ÷ choke points = survival probability.
Adapt the stadium model: given your dome's population cap, entry gate count, and allowable processing time, compute whether your airlock choreography clears the safety threshold.
In my father's warehouse, we learned: la puerta es el cuello de botella (the door is the bottleneck). Same principle that moved 300,000 tons through Panama Canal locks. Same geometry that fills Soldier Field in 75 minutes. We're not inventing new physics—we're translating proven patterns.