The context of the following conversation is Casey didn't want to try out the experiment for class. Carson conducted Casey's experiment instead.:
Carson says The experiment I chose wasn't as cool as Casey's. His was just so exciting to watch..
The friend responds Carson. You need to have confidence in your choices. Yes Casey's had visual appeal, but I think yours was great too..
Carson responds You think so? The class would have just yawned if I did my experiement..
The friend responds Who gives the grade? The professor, or the class? You know the answer..
Carson responds I think you're right but its too late now..
The friend responds Maybe you should talk to the professor so he see's what you originally were going to do. It might help..