" They just change. Their body changes. Their abilities - the things they do that make them who they are - leave, sometimes temporarily, sometimes forever. Every day they wake up with that big what if?

And nothing is scarier than a life filled with what ifs - living by day without predictability and control. Some people end up losing feeling. Some have uncontrollable spasms. Some can't function. Some end up blind or in a wheelchair. Some end up bedridden and paralyzed.

It's hard to know who "some people" will be. "

― Lindsey Leavitt , Sean Griswold's Head