Trading is very unpredictable and I think that its risky to do it but on the other hand it stays very profitable for a short term so due to that its also again worth it too.
Yes, of course, trading is unpredictable work, but if we have skills and knowledge than this predictable work give us money, but it is depend on our ability how to earn. Yeah, altcoin trading better is that earn in a short term, than it will be profitable.
but i think it is not unpredictable for those people who have good experience in trading, they not feel any difficulties to predict about the trading where they are interested.