Decide on the structure of the questions. Decide on the actual wording of the questions. These categories enable us to determine the reliability of information we collect, and they are useful in designing your interview questions. Facts are always about the past or present. Facts cannot be about the future, because we cannot verify something that has not yet happened.
Inferences are statements about the unknown, made on the basis of the known.
Inferences can be about the future or the past. A statement about what caused the massive savings and loans failures a few years ago is an inference, based on reports of various factors that appear to have led to this financial disaster. Judgments cannot be verified. Judgments are expressions of approval or disapproval. We can draw inferences about whether X is better than other software if we have agreed upon criteria to measure its performance.