I guess it depends on the meaning of predictable? We couldn’t predict 1 usd = 5rub would turn into 1usd =25rub almost overnight. My parents had friends in busin

I guess it depends on the meaning of predictable? We couldn’t predict 1 usd = 5rub would turn into 1usd =25rub almost overnight. My parents had friends in business killed (sadly not predictably) so it was unpredictable when it would be their turn.