Bear Grylls Surviving in the Sierra during Summer.
(Warning: Some interesting and valuable suggestions, some nonsense, some just dangerous)
Rock climbing, determining east and west
Water purification and float
Foods, shelter
Throwing stick, making fire, food sources,
Floats using clothing clothing (why didn't he exhale into the floats to re-inflate them?)
The cure for a fallacious argument is a better argument, not the suppression of ideas.
-- Carl Sagan