You know what even if you will not read that article you could still explain in simple things on why bitcoin is so volatile in terms or its market price. The market price for bitcoin are moving constantly and no once could pin down the exact amount or value of bitcoin. We can only describe the bitcoin market price but not the exact value. Why does this happen? In simple explanation bitcoin has a lot of investors. As its demand increases its market price also increases. So everytime an investors around the world invest in bitcoin it adds up to the demand and thus market price for bitcoin move. And after a certain period of time another investor also will going to sell the bitcoin holdings especially if that someone has already the profit to earn bitcoin. So bitcoin demand will decrease so as the bitcoin market price. This the main reason why bitcoin market price value is volatile.