The world’s currencies are on an endless roller-coaster ride, their relative values constantly rising and falling in relation to each other, with the occasional stomach-churning drop. Last year, it was the turn of the US dollar to hurtle downwards, as UAE expats earning dollar-pegged dirhams know to their cost. The dollar suffered its worst year in a decade, hitting UAE residents with financial commitments in foreign currencies, as their earnings do not travel as far as they did a year ago. Well, if Bitcoin can't, then the US dollar can. Everything will in time be good.