Here's one of several, perhaps many.
When you drive for a few hours on the interstate and maybe you are drinking some alcohol on the way, what's often one of the first things you do when you get off at your intended exit? Find a place to pee? Maybe at a truck stop?
Other possibilities abound, but they may not be probabilities. What separates possibilities from probabilities? Over or under 50/50? If there's only a 40 percent chance that a possible scenario will lead to a solution of a major crime, do you ignore it because it's not probable?