What were you told you were incapable of as a kid? Math? Singing? Running? Basketball? How many times did you have to hear it before you believed it, before you owned it entirely?

Today I received, once again, a link to an inspiring amateur video of the final moments of a high school basketball game. You’ve seen it, I’ll bet, at least once. The coach of the home team puts the beloved team trainer, Jason McElwain, in the game, an apparent generous gesture of gratitude for his years of service to the team. Jason happens to be autistic.

So, point guard passes ball to Jason at the baseline, Jason shoots, Jason scores. A three pointer. Crowd goes wild! Feel-good story right there, worthy of a good number of hits on YouTube.

But the shot was no fluke. You’ll remember that Jason drops five or six more in the next four minutes of play. He’s white hot. He’s in the zone. Marv Alpert would have deemed him, “Unconscious!”

Cool video, no doubt.

After watching a couple times, I started thinking about the coach. Like the entirety of the crowd in the packed, sweaty gym that night, I’m certain he was caught up in the thrill of the moment, the very goodwill of it all. But I wonder if later, in the dark reaches of his mind, he considered the fact that he had a ringer of a forward right next to him on the bench, the whole time, gladly handing out Dixie cups of Gatorade during time-outs. If you’re that guy, at the end of the season, do you really want to know?

If he’s at all like other coaches I have known, I’ll bet he still has occasional night sweats about it.

The reason this story launched into the cultural zeitgeist, I assume, involves the shock of what Jason could do on the court. Nobody knew.

We do this with our own kids too, don’t we? We make stealth little assumptions about what they are good at and, more to the point, what they are not. Like with Jason, it sometimes doesn’t even occur to us that our child is talented in some area or another. And a diagnosis of autism isn’t required for us to place a virtual cap on a child’s potential. I fear we don’t pay enough attention to all our kids can do.

So why would we do this? Perhaps we’re trying to protect our kids from failure. Maybe we’re protecting ourselves somehow. Either way, I can tell you this is dangerous stuff. I know that, if we drop our expectations of our kids, they’ll meet them, and no more. I firmly believe that every child carries greatness, and part of our job as parents is to help them identify and maximize their greatness, wherever it lies.

The critical truth is, when our children are young, they are often limited not by the power of their imaginations, but by the power of ours.