The inference browser is the tool that permits Cyclists to peruse a particular inference after a query (regardless of whether the query succeeded or failed).
It will present all of the inference information about the result of the query including which rules and GAFs were used, which transformations took place, which Mts were visible, the amount of time each step took, and other various aspects of the underlying code implementation that made the inference do what it does.
It takes a great deal of practice to understand everything that the inference browser presents. The more one uses it, the more each page becomes discernible, and the more information one will recognize that it presents. For more information, see the training module Using the Inference Browser.