Mostly there are quite different triggers that a certain occasion, event or idea will become a matter of investigation, therefore security is seldom a dominant feeling at the start of a research project. To get a clear idea of the question, to get to grips the adequate method which guarantees to receive a good structured answer of the asked question, and reflecting the conditions that necessary things and persons you need in your project are available - this altogether generate a very complex situation. Of course, if such conditions are not clear or there could be risks than you have to render adequate pre-tests that you can be sure: it works.