As important as it is to recognize nutritious berries that give you strength to endure long treks through the wilderness, it is even more important for you to recognize the poisonous berries that punish you for flipping the berry coin. Heads I’m safe, tails, I die is no way to determine whether any berries that you come across can help mitigate hunger. Remember that you have no cell phone communication in the backcountry. You need to recognize poisonous berries and stay away from berries that kill you.