To be really good you just need to be better than the average trader. And for that you don't need to sell the exact top or buy the exact bottom. It's enough to stagger purchases and sales in proportions that depend on the probabilities of price increases/decreases by certain numbers. Finding the probabilities is the trick here, as well as averaging them out in a way that guarantees you a performance band in which your portfolio will fall with a given probability. Doing that requires an understanding of time series as well as the ability to process large amounts of data (beyond just the price charts) though.
Agreed, but why didn't we see the crash coming? If there was a pattern to predict that, not many here did.
Did you know after it went up towards 20k that within a month or so it would hit 6K? I didn't.
You don't have to know when it'll start crashing, how low it will go, or when it will reverse up to what point. You can use historic data in combination with fundamental analysis to compute a set of prices at which you buy/sell parts of your stash, as well as how large those parts should be to maximize profits while simultaneously minimizing the risk of losing. That doesn't mean you'll make the maximum possible profit, but rather that you'd maximize your profits while making sure that you don't drop below a certain threshold. The threshold is something that you choose according to your risk appetite.
Humans don't exist in anything other than groups. The average person is the culture you live in. That's why.
Money will not be eradicated. Not going to happen.
Never said money will disappear. I don't think it will, even if we end up in a period of abundance. It's overall role in society may change (e.g. the 99% won't really see it any longer), but it's not going to go away.