The song fly me to the moon is about a Man who wants his partner to "fly him to the moon" as in take all his worries away and wanting to be kissed. based on this I think its about the human need for affection.
sorry if this is a bad answer this is all i could think of.
Shinji get in the robot!
For example, people who have anorexia severely reduce their food intake to lose weight. People who have bulimia eat an excessive amount of food in a short period of time, then purge or use other methods to prevent weight gain.
