Adventures of Wim is a book by George Cockcroft,[1] written under the pen name Luke Rhinehart.
The screenplay is possibly in there as a result of Luke Rhinehart's continuing frustration in trying to get The Dice Man turned into a good movie.
Sadly, social services force Wim to attend school, where they attempt to educate him in more useful skills, such as American Football.
This does not seem to be something that will benefit his tribe terribly, but the navigator isn't one to stare down the barrel of a lightning gun, and sends him on his way.
After a long and arduous search, Wim finds ultimate truth (in a potato), and with it the cure for the sickness of the human condition.