Complex problems can have a lot of moving parts, and it is easy to lose track of some of those. This why our working memory is a strong limiter in resolving complex problems. One way to address this limitation is to use a hypothesis map.
A hypothesis map is a graphical breakdown of a hypothesis. It uses argument mapping conventions (for a primer, read Austhink’s excellent tutorial on argument mapping) to analyze the thinking behind the hypothesis and to support this thinking by capturing the relevant evidence.