When I was 35 I sent a copy of my third novel to my father. He emailed two days later saying he was eager to talk to me about it. I called him immediately. "Well, I think it's the best thing you've ever written," he said. "And I think you'll never be a success as a literary writer."

Stunned, I staggered my way through the rest of the conversation as if I had just found out I had cancer. I hung up and considered never talking to him again. I called right back instead, and told him -- as a father of two sons myself now -- that you never tell anyone, let alone your son, that he won't be a success at something. You just don't do it. We talked some about looking for other people's approval, and I ended the conversation deciding I wasn't done with him after all. But I was left with a question I had asked of him many times in my life: How could he not know never to say that?

It was 10 years later and we were on the phone again and the conversation turned to my sister. "She was always smart," he said. "But more importantly, she's also psychic. I'm sure of it."

And for the first time in my life, I thought, "So are you, Dad."

Though I didn't mean psychic in that he could see ghosts or know what card I'd drawn. Instead, it was an intense sensitivity to the emotional quality of whatever was being thought nearby him. It could make hanging around with him a little unnerving. If I thought it, he would mention it somehow. Until that evening, I had always thought he was insensitive; but it was just the opposite. Some of what I had called rude was just him turning his back mentally on other people so as not to ride their emotional train.

Then, three years ago, my father, at the age of 77, made an announcement. "I've figured out the reason I am the way I am, Bill."

"Why's that?"

"I have Asperger's syndrome."

He'd been doing some reading and the pieces all came together: the discomfort in social situations; the tendency to monologue rather than volley back and forth in conversation; the preference for facts over feelings; his love of numbers and his frustration with art; his discomfort with ambiguity and his love of rules. He wasn't just Asperger's, he was classic Asperger's.

It was a great relief to him. "What is wrong with me?" was a question that had followed him most of his life -- as it does most of us, I think. Now he had his answer. There wasn't anything wrong with him. He was just Asperger's. This is how people with Asperger's behaved. He was behaving exactly the way a person with Asperger's should behave.

In my experience with my son, who was diagnosed on the autism spectrum 10 years ago, and all my life with my father (who has perhaps accurately self-diagnosed himself), I no longer believe these words -- autism and Asperger's -- refer to something anyone can have. They are just words used to describe a collection of behaviors we once believed inhibited a person's capacity to thrive.

I do believe, however, that no one -- not my father with his psychic sensitivity, nor my sister, nor any medium or doctor or scientist -- can know the future in its inevitable wholeness. I've tried my hand at this kind of prediction and I've been wrong every time. I was wrong when I predicted doom, and I was wrong with I predicted glory. The only time I've been right about life is when I've seen that there is never anything wrong with it or anyone.