This year, inspired by a contest on another blog, I created my first-ever bracket for the March Madness. I am not what you would call a serious basketball fan*, so I have no idea which teams are likely to win, or why. But sheer randomness in my picks would never do; I would never remember who I was cheering for, and I tend to drop coins when I try to flip them. I needed some sort of methodology for choosing my teams, which is why I settled on: alphabetically.
I don't see how this could possibly fail.
*Unless what you call "a serious basketball fan" is "someone has never actually watched or cared about a basketball game." I don't know how you do things.