Oftentimes we think we can find out everything about a topic by going to the library or searching the Internet. In a few rare cases this may be true. However, there are many situations where you really must interview experts for research purposes. These reasons include the following:
Obscure topic:
Sometimes the information you need isn't available in books, magazines, statutes,
computer databases, or on the Internet.
Expert has an unusual slant on a topic:
Even if you've found information in various resources, it might still be advantageous
to find a person or group that has already done it, studied it, or survived
whatever you are researching.
Complex topic:
You need understandable explanations for complex processes and ideas.