Introduction (Or, why you should buy a really bright light!) ------------------------------------------------------------------------- You are plunging into the darkness at over thirty miles per hour, balanced on a spinning rim that graces you with no more than a quarter inch of thickness at its final point of contact with the ground. You can't see what lies in front of you, but perhaps more perilously, you can't see the ground below you either. You don't know what that thin disc is rolling across, and when you feel the jolts and the jars, it's far too late to react. Of course you're wearing a helmet! What kind of fool do people take you for?! ...  Read the complete review