First and foremost, you don't need a billionaire to tell you to invest in bitcoin before you start investing in bitcoin. Investment is the ability and principle to see the future outcome  of anything useful in the financial ecosystem.  You should know and understand why people invest. Investment is all about purpose. If you know the purpose and value of something, you will not need the other party to come and tell you to invest before you invest in it. Always understand whatever you want to invest in before you put your money in it.