@noeldemartin I have a vague memory of seeing a documentary about ants finding a new nest location. There's an algorithm to that. Maybe finding food is similar. I believe they send out ants in all directions and they all report back whether they find something or not. Each ant will show a level of enthusiasm and more ants will follow the most enthusiastic ant, but some will follow others. These groups also report back. Repeat, and they soon arrive at an optimum without risk of individual bias.