The Chart captures the market "As-is". When you look at the chart, it tells you the balance of power between buyers and sellers at that particular point of time. It helps you make a decision on what course of action you should take depending on the state of the market. It helps you make informed decision. Example: If chart shows the trend of rising prices, then it tells you that downside is limited and one should look to buy and vice versa. The charts help you to be in syn with market.