Why are implied powers important?

In respect to the government and general historical development of the United States, 'implied powers' are important in several respects. In a practical way, the concept of 'implied powers' enables governmental officials and agencies to perform necessary work on behalf of the people without that work being explicitly stated or defined by constitutional documents. That such acting 'on implication' can sometimes cause conflict is undeniable; however, in such cases, the 'implied powers' become important in another respect: debated and defined by legislators and judiciaries, they provide the opportunity to clarify in yet another particular way the roles and responsibilities of government.