Reaching a conclusion or resolution to an outstanding question or issue appears to be a straightforward process. Basically determine the options, and select the one with the best value.

Unfortunately maintaining objectivity, particularly if input is sought from a number of stakeholders, is not always that simple. Opinions and subjective assessment creep in.

Follow a Process

The purpose of a formal decision analysis and resolution process is to enable analysis of possible decisions using a formal evaluation process that evaluates identified alternatives against established criteria.

This practice promotes objectivity over subjective assessment.  Also by definition it must include tracking how the decision evolved. This allows for post decision improvements..

That is, if something unexpected or undesirable becomes apparent after the recommended solutuion is implemented, the analysis process can be backtracked and improved for future decisions.

This continuous improvement aspect of the process is a critical underpinning of the overall practice.  Being able to continuously improve the quality of solutions, over time, has obvious benefits.

Justification

Documenting why a choice was made also motivates all involved to be more careful in their judgement.  After all, post decision, a look back is possible and logic flaws could be embarrassing for those that were responsible.

This highlights the need for strong and solid justification of the solutions elected.  Impacted stakeholders often take more care with their input.

Use as Needed

While a formal decison analysis practice will improve quality of choices over time, following well defined steps can sometimes be more effort than it is worth. 

Choose critical decisions with far reaching impacts when following a formal practice.  For day to day, do this – do that decisions it often is not practical, nor necessary to follow a full blown process.