Final answer:
The common nucleus of operative fact refers to essential elements or events in a legal claim or defense that are usually tried together, but there can be exceptions.
Step-by-step explanation:
The question is discussing the concept of the common nucleus of operative fact, particularly in the context of a trial. The common nucleus of operative fact refers to the essential elements or events that form the basis of a legal claim or defense. In a trial, these common facts are usually tried together to provide a complete picture of what occurred.
However, there may be instances where it is more appropriate to separate the trial of certain facts to avoid prejudice or confusion. For example, if there are multiple charges or defendants involved, it might be necessary to try each one separately to ensure a fair and unbiased proceeding.
In summary, whether the common nucleus of operative fact should be tried together or separately depends on the specific circumstances of the case and the goal of achieving a fair trial.