A more thorough explanation:

Definition: Incompetent refers to a person who is unable to manage their own affairs due to mental incapacity or a serious physical disability. This can lead to the appointment of a guardian or conservator to manage the person's affairs. In criminal law, a person is considered incompetent if they are unable to comprehend the essence of a trial and are therefore ineligible to testify or stand trial. Evidence that is not acceptable in a court of law can also be considered incompetent if it is irrelevant or immaterial to the issues at hand.

1. An elderly person with dementia may become incompetent and require a guardian to manage their finances and healthcare decisions.

2. A defendant in a criminal trial who is experiencing severe mental illness may be deemed incompetent to stand trial and be institutionalized until they recover their mental capacity.

3. In a court case, evidence that is not relevant to the issues being discussed, such as a witness's opinion on an unrelated matter, would be considered incompetent and not admissible in court.

These examples illustrate how incompetence can refer to a person's inability to manage their own affairs or participate in legal proceedings, as well as how evidence can be deemed incompetent if it is not relevant or material to the case at hand.