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Apparently he didn't actually understand how bitcoin works, either. But that's not essential to profit from it.
It's not essential to understand how Bitcoin works, in order to profit from it, that's true. But understanding how it works removes almost all reservations you may have in putting a good percentage of your wealth in Bitcoin.
Take the Halving events for example. My initial purchase of 0.5
BTC for $120 back in 2015, that was immediately followed by several other purchases, was triggered by the 2016 Halving. I just knew I had to get into the 2016 train. It was common sense, understanding how it works, and the knowledge that production was soon going to be halved, that triggered the purchase of many of the coins I now have. Without that knowledge and understanding, I may have ended up delaying the purchase (and bitterly regretting it).
Knowledge is power, and it's all out there for those willing to see.
4 years. Your choice!