4.65. Early iteration in the decision making process should be undertaken with the available data and capacity for conducting assessment. The iteration needs to proceed only until the assessment is judged to be adequate for its purpose. Furthermore, additional information needs to be acquired only to the extent necessary to improve the basis on which the decisions will be made. Some decisions may necessitate iteration in respect of only one specific aspect of the safety case (e.g. the improvement of the data requirements for a specific model). Other decisions may necessitate more iterations, which may involve revisions of several components of the safety case, such as:@@@@- The context for the safety case may be adjusted to, for example, treat uncertainties more realistically or to broaden the range of receptors considered.@@@@- The strategy for safety may be revised.@@@@- New data about the site may become available and/or the design may have been developed further. @@@@- Triggered by such changes or by other factors (e.g. the results of peer reviews), the components of the safety case and supporting assessment may need to be revised and developed further.