It is a truth universally acknowledged that we need to have a plan B when we are doing important things. As a famous proverbs goes, it is unwise to put all your eggs in one basket. This saying obviously aims to deliver the message that in order to avoid possible failures and setbacks, we ought to make adequate and flexible preparations. Nobody can be certain of what is going to happen in the future; therefore, we all need to have different plans and prepations in case of undesirable outcomes.