A bike helmet protects a rider from serious head injury in a collision. That's why it is always recommended that you wear a helmet while riding a bike. And if you don't, you will get an experience of hell sooner or later. This is what the following advertisement tries to tell you. On the left it shows a common helmet and on the right it shows the bruised and stitched face of a road accident victim. To avoid this, wear a helmet. This cleverly prepared ad copy perfectly delivers the message. What you say?