Blind?

Today I sat next to a blind kid in my liturature lecture. I've seen him in a few lectures earlier this year but I never gave much thought to his situation. He comes walking in with his cane, which he moves back and forth to figure out where he is and what's around him. Anyway after lecture he springs up and takes off towards the door, bumps the wall with his cane, finds the exit and is on his way. He's so confident with that cane. Sometimes I walk down the sidewalk when there aren't too many people out and see how far I can get with my eyes closed. I use the feeling of a crack on the ground to guide my foot, but I can never make it very far before I open my eyes. When I do open my eyes I'm always underwhelmed to find out that nothing has changed... I'm still alone on the sidewalk. I guess I'm just so afraid that I'll run into something if I can't see.

Why are we afraid of what we cannot see?

I think we should close our eyes more often.