A small group (2-10 people total) is travelling in a wilderness area. For whatever reason a person or a couple get separated. What is the best strategy for the lost ones? What is the best strategy to be employed by the group. The goal is to reunite. How important is it for the group to sit down and talk about this before a trip?
A couple of algorithms I have seen my buddies perform:
First one: Both group proceed to the next checkpoint, that was defined for example at the morning looking at the map.
Second one: Both groups return to the point of separation.
I would love to read some theory on this, so quoting sources is very welcome.
Here is one example. We are talking military here, special forces mind you. They go on a mission, get separated, and that is one of their major mistakes. One survivor.
Another example: just yesterday evening I was riding bike with two friends. I turn left, they shout at me that they are going another way, I do not confirm (as I had not seen or heard them).