No one say it correctly but they only suggest. All coin has up and down. You can verify this coin team, value, supply, rank, roadmap etc. Aftet reseach that you should buy a coin for long term hold. Otherwise you fall down.
Bitcoin remains the best to buy, for short-term and long-term investments because so far it has been proven that many bitcoin investors are becoming millionaires. If not for investment, it is also possible to trade for those who like challenges because the price of bitcoin goes up or down very fast. Another coin refers to the price of bitcoin, while bitcoin is converted to USD.