If you never saw lightning and it was put in a film you would say that it was the worst CGI effect you’ve ever seen. I’m sure the director would shout “Cut! What the hell is that supposed to be the audience isn’t going to believe it. Give me a break that is so fake!” Yet when one is struck by this fake effect it feels awfully real and the sound effects afterwards make a believer out of anyone. So the next time you see a movie with poor CGI think of the night sky and maybe you will believe again.