It is USUALLY the case that the tasker has a "feeling" or an idea about the unknowns of the task. Extreme care must be taken to make certain that the tasker's ideas are not expressed in the actual text of the question.
EXAMPLE: "My daughter is missing. What does the man who kidnapped her look like?"
In this example, the tasking, itself, introduces information into the session that the viewer will have to fight: "kidnapped", "the man". Possibly, neither of these is true. However, if this wording gets to the viewer, it becomes a STRAY CAT the viewer will rarely be able to overcome. The monitor or some other trained person will need to reword the tasking before the viewer is allowed to see it. The wording of the tasking should be as neutral as possible.