How does it work again (I remember reading up on ant behaviour)? An ant comes straight back on the same path, when it finds food. Since ants leave pheromone mar

How does it work again (I remember reading up on ant behaviour)? An ant comes straight back on the same path, when it finds food. Since ants leave pheromone markers, this path is now stronger, so other ants know and will in turn follow. A simple algorithm leading to a higher aggregated outcome.