Evaluation involves assessing information against criteria to make judgements. The key steps in evaluation are information collation, assessing adequacy and effectiveness, and truth assessment. Information collation involves gathering relevant information, while adequacy looks at whether enough information was collected. Effectiveness determines if the information achieves its intended purpose. Truth assessment qualitatively checks the veracity of the facts. Successful evaluation also relies on clear definitions, assessing truth and consistency, and using qualified independent reviewers.