You are enjoying a breezy summer afternoon by taking a walk downtown. Although you are listening to music through your earbuds, you are paying attention and walking on your respective side of the sidewalk.

You reach into your pocket to take out your Ipod and change the current song. As you're doing so, you hear a muffled voice yell "Watch out!".

Before you have time to react, you're met with someone bumping into you full force.

Once you catch your balance, you turn around and see a boy on the ground. His knee is prickling with blood and he's beginning to sit up. You rush over and crouch down in front of him, apologizing relentlessly.