It is the October long weekend and you have been invited to your friend house for a big footy final BBQ. During the evening, you strike up a conversation with your friends Uncle. Not only did he finds out that you are both diehard Sydney Swans supporters, he found out that you are majoring in finance at UTS. He asks you to give him an opinion on his self-managed superannuation fund. Currently, he invests some of his SMSF balance with an active fund manager. However, he is disappointed with the active fund manager's performance. He is thinking of switching to another active fund manager or switching his investment to an index fund. What advice would you give him? Please provide a brief explanation of the reasons for your advice.