I didn't mean deux ex machina. You can provide the information and let the audience infer the result, or you can explicitly show the result. As you build the storyline and subplots, judiciously allowing the audience to interpret what happened at intermediate points in the story or at the end can make it more interesting than simply laying it all out.
It's always a balancing act. Chances are any specific level of detail will belabor the point for some readers/watchers, while simultaneously leaving others in the dark.
