There have been plenty of survival shows over the past 10 years or so. Extreme Survival, Survivor Man and Stroud spinoffs, Man vs Wild and Grylls spinoffs, Dual Survival, Man Woman Wild, Naked and Afraid and Alone. While they are very entertaining they are also all pretty unrealistic IMHO, but it got me thinking. I've camped/hiked all my life and have found that lighter weight for all your gear is the way to go, that includes knifes. I used to bring a small ax and a small knife but eventually dropped the ax as there was always plenty of dead wood around most places I went. These shows are different than regular camping/hiking obviously. That being said the theme of most and the rules of the most recent are that you can only have one tool. Of course they always and wisely choose a knife. So I'm asking what one knife would you take to one of these shows and why?