Bitcoin becomes very risky and uncertain to invest when people are unaware of its volatility and the movement of the market. When their is understanding of bitcoin volatility, unpredictable bear and bull Market their won't be any risk because one is not with wrong mindset just investing to make money quick. When there is this understanding that the market can't be predicted and understand how Bitcoin and the market works thus is what will give one the ability to invest in bitcoin without having doubt about bitcoin.
Understanding is just every one needs to be able to invest bitcoin without double thoughts, understanding give confidence that one is investing in the right asset even if one can't tell when exactly to make profit .
Of course. BTC is the most dominant if we see in the market where the ups and downs of market prices are also very dependent on BTC price movements and almost everyone here knows the direction, only here we need to discuss the correct patterns and techniques when investing in BTC along with the risks inherent when fluctuations occur and not coming to invest just want to make money quickly with a short duration as you have said above.