Why do you think Finny invented Blitzball?

Finny's invention of "blitzball" shows many aspects of his character at work, especially his inventive spirit and his ability to balance chaos with rules. It also shows off Finny's incredible athletic ability, making him even more of a wonder in Gene's estimation. Gene is so impressed by Finny's skill at this difficult, invented game that he describes Finny as being capable of "acts of sheer mass hypnotism," a phrase which suggests some kind of player's charisma at the game. In essence, Finny developed a game in which he can excel, not to mention have fun.