Some people say that Bitcoin can't be manipulated, other say that it is impossible to make the price of Bitcoin go higher or lower, All the markets in the world can be manipulated even criptocoins like Bitcoin, in this article you can read more about the 1000 people that own 40% of Bitcoin and they could easily make the price go higher or lower as they want.
https://www.bloomberg.com/news/articles/2017-12-08/the-bitcoin-whales-1-000-people-who-own-40-percent-of-the-market
What do you think about this? Maybe Bitcoin is not the dream all think and if what they say in the article is right then a lot of people sooner or later will loose a lot of money.