For the fire-making challenge, each castaway will begin to post in numerical order as fast as they can. Posts will only count if they are in proper order. The objective is to get to 20 posts. However, there is a slight twist.
At any point, you can choose to say 'STOP!'. At this point, the number of valid posts you have made will serve as the likelihood of your fire successfully burning through the rope. So if you have 10 posts, you have a 50% chance of making a fire (10/20). If you have 4 posts, you have a 20% chance (4/20). If your fire fails, you will have to go back to post #1 when it resumes.
It is a mix of speed and luck. Are you both ready?