The thing there is those guys who believe that they can sell their bitcoin investment and buy back cheap are just funny guys who still lack knowledge and understanding about bitcoin, because bitcoin investment doesn't work that way. It Will be better they keep accumulating bitcoin on a regular basis through buy only and hold than even thinking of selling to buy back cheap. selling your bitcoin investment to buy back cheap is just another Risk on it own, why because bitcoin may end up not dipping to extend they are expecting dip in other for them to buy back cheap, and they will still end up buying back bitcoin at a higher price and end up regretting why they even sold your bitcoin investment in the first place.