Why do we need Right to Information Act?

In the absence of Right to Information Act, if you seek certain information from any authority, such authority may ignore your request or delay in furnishing the information, at his discretion.  But, if you seek the same information under the provisions of Right to Information Act, the concerned authority shall have no discretion to deny you the information and is duty bound to furnish information within a stipulated period unless such information falls within the category of deniable documents/information. Failure to furnish the information within the stipulated period would attract penal action against such authority.