as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
how to explain efficient frontier to child?
user
i know you really like bananas, but don't you think you would get tired of them after a while?  better stock up on some kiwi and mango just to mix it up a bit. i wouldn't want to risk eating only banana sandwiches, banana ice cream and banana bread for the rest of my life.  i have don't think i could take it.  same goes for mango and kiwi, but i think if i had all three i could probably get along just fine.
assistant