One man can not do anything but the whole people that are intersted in bitcoins can.
yeah I agree with you I think even if you're someone who has a very large capital and you aim to manipulate the price of bitcoin, it will not be all you can do because you would need a team, there is a lot of work you have to do at the same time when you want to manipulate price, you will not be able to do it alone?
You will do bad things to earn income i think that is not good for you, illegal activities can harm the family of who will do the manipulation of bitcoin price, much better to work hard and do not think any illegal things in bitcoin.