At Boran, they fetch the reward challenge clue, a snippet of which reads as follows: "Gather no moss as you roll this stone." Bad, bad, so very bad. Apparently, they can't "do it alone." Yada yada yada "clean water and shampoo." For once, a tribe actually deduces from the clue that they'll be "rolling a stone." Silas tells us "it's nice to win," but how would he know?