Travelers use different channels to get different kinds of information. An example is deciding where to go on vacation. All the information channels used in the system relate to each other. A tourism information system is like a novel because it has many different parts tied together by the theme. Even though a system's channels serve different functions in providing information, they are all tied together by the projected message.
All channels used in the system are interdependent.
A tourism information system functions like a puzzle. The different pieces of the system, the channels, are used to communicate with tourists. If any of the puzzle pieces are missing, the puzzle's picture is incomplete. If one or more of the channels used is not dispersing information effectively, or if the information dispersed does not relate to the rest of the system, then the system will not effectively communicate its whole message. If one or more of these characteristics is missing from a tourism information system, then its message will be inconsistent and ineffective.