First off, I'm sorry that happened to your son.
I've spent a lot of time with people who have special needs at a weekly Special Needs Mutual. I was a partner to a down syndrome and deaf girl named Amy the year that I was able to go. I got to spend a lot of time with a lot of different people with different needs. Some, like Amy, couldn't talk. Some talked a lot! Some were confined to wheelchairs, or had walkers, helmets, all sorts of stuff. And the cool thing about it was that although sometimes we couldn't communicate well, I could just feel a peaceful, happy feeling. I felt loved there. I felt the Spirit so so strong! (And yes, I am a religious person. I don't know where I'd be if I wasn't) I felt special. And a lot of times, I think I was there because I was the one who needed help. It was so nice to go there and be greeted with a crushing hug, or a pat on the back, or a sweet sweet smile.
My uncle was quadroplegic (spelling?) and when he was little my mom pulled him around in a little red wagon. He rode on a cart when he got bigger, wrote with a pencil in his mouth, and went to college. He even designed his own car, a van, that he could get into with his cart and drive with his chin.
The things I've learned from these experiences aren't really lessons, but I've learned unconditional, forgiving love, kindness, determination. I learned from my uncle that you can do anything you set your mind to. I've learned that God loves everyone.
Sorry that this has nothing to do with chickens. Sorry that I've been rambling on forever.
I guess I'm just one of those people who believe that everything in life can be turned into a lesson, that you can grow from your trials instead of letting them pull you down or make you bitter.
So, learning from Radar:
Sometimes you have to be blind to see the really important things.
You can overcome your weaknesses and make them strong.
Don't judge, or put people in stereotypes. Allow people to show you their potential before you push them down.
Everyone deserves a chance.
Kindness from you will be returned ten-fold.
Memories last forever.
I really hope that helped!