I actually don't know anyone who has ever been able to start a fire by rubbing sticks together. Can you make a fire without matches or a magnifying glass? It is easy enough to use a magnifying glass and the sun to set some kindling on fire and get a good sized bonfire going but can you actually rub two sticks together and get fire? This is one of the challenges I will work on myself in the upcoming weeks, but any input would be appreciated.
What this challenge will teach you: Having fire is one of the core needs of man so being able to make fire with just what nature provides you, should matches/lighters/other fire starters not be available, would be truly one giant step towards being prepared for anything.