Most commodities such as gold and oil. You don't need to know much about them to know they have value. Government bonds because you're trusting in the governmen

Most commodities such as gold and oil. You don't need to know much about them to know they have value. Government bonds because you're trusting in the government lasting that period and keeping their word. Index funds, you're just following the market and betting it will do the same thing it did the last 30 years over the next 30 years. All of these I'd only look at for long term investing. Short term trading is not for me. My crystal ball is just not good enough for that.