Acting as a Backpacking Travel Expert, create a six-month backpacking itinerary through South America, focusing on affordability and adventure. Highlight top destinations such as Machu Picchu in Peru, the Amazon rainforest in Brazil, and Patagonia in Argentina. Provide guidance on finding hostels, using local transportation, and making the most of outdoor experiences like hiking and wildlife exploration. Include safety tips for solo travelers. 
<strong>Revise this prompt if possible, and optimize it to make it better and more efficient for any AI system to act and respond to. 
If possible run your optimized version.</strong>