It is often argued that forward exchange rates should be unbiased predictors of future spot exchange rates

Question:

It is often argued that forward exchange rates should be unbiased predictors of future spot exchange rates if the is efficient. Is this true or false? Why?

Foreign Exchange Market
The foreign exchange market (also known as forex, FX or the currency market) is an over-the-counter (OTC) global marketplace that determines the exchange rate for currencies around the world. Participants are able to buy, sell, exchange and...