I was thinking about a plot for a story, and it would be based in a world that already exists and perhaps might even be inspired by a story that actually happened. I'm not completely sure what the general consensus is for how to handle something like this though. I know there are movies and probably books as well that refer to people that actually exist. I'm sure at some point they got the person's permission so it wasn't an issue, but I'm not really interested in the legal side of this issue because I know that if I actually tried to sell this eventually it would be incredibly easy to just change the names of everything. So lets say we're talking about the world of professional poker for example. There are organizations (WPT and WSOP for example) that actually exist that make up a large part of the professional poker world. You have "famous" poker players that have their own back stories, you have the commentators and reporters that cover major events. If I were to do a story where I write about a cop that has to infiltrate this world in order to take down a poker player that runs an undercover drug ring or something... I feel like it would be better to use real people and perhaps refer to real events because for someone that follows the professional poker world, that makes the story just a little bit more interesting. Especially if I did a lot of research to who these people are. I think where I would draw the line is if I were to create a character for a story. Like I wouldn't make this "bad" poker player and name if after a real person. Anyways, what do you guys think about this issue?