Agree for the most part, although the part about needing other people to win challenges you could argue is strategy, particularly in Rich's case where he quite obviously lost the challenge on purpose for that very reason. And I wouldn't necessarily say either Todd or Parvati needed Amanda to win that final challenge, I think Todd would have still easily won if he had won it himself and Parvati would still easily crush Amanda when talking to the jury and would likely be able to convince Cirie to still vote for her.