Many coins have a pattern, and can be easy to detect which way it will go. However, nothing is certain and I am not kidding when speaking about its high volatility. One bad article can cause a heavy dip, and it doesn't even have to be from a legitimate source. Someone posted on 4Chan that Vitalik died in a car crash, and people panic sold which caused the price to drop. This is why you don't believe everything you see or hear, so do your research.