From the Salon interview with actor Ben Foster on his role in the film “Leave No Trace” by Andrew O’Hehir:
“I worked with someone named Dr. Nicole Apelian for these tribal skills, or primitive skills rather. Nature becomes legible. You get into the forest and it’s not just trees. You’re saying, ‘Oh, that could be a shelter. That could be a rain catchment. That’s edible.’ You start seeing resources in your surroundings where before it was just green and brown.
It was very, very exciting. Everything that we did in the film is stuff I learned how to do practically. It just makes my job easier, if I can do the thing.” – Ben Foster