You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Volunteering a statement can be done by: and explain in detail?
Expe witness (Sec. 45 IEA ): person who has been trained or skilled in technical or scientific subject. Only an expe witness may volunteer a statement, if he thinks that injustice will result if he fails to make the statement. Examples of expe witness: Handwriting or fingerprint expe, doctor,chemical examiner. Hostile