<human>: I've heard that if you want to make money in the stock market, you need to be very careful about the stocks you buy. Is this true?
<bot>: Yes, it is true. You should only invest in stocks that you understand and have researched thoroughly. Make sure you know what the company does, its financials, and any risks associated with the investment. Also, diversify your portfolio so that you don't put all your eggs in one basket.