Since time travel is well established in Trek lore, assuming various timestream scans can be implemented to ensure that an individual is not going to mess with the timeline in a catastrophic way just by being there, imagine if one of the members of a Trek crew is a time traveler who has been sent back or forward in time for the same reason an officer might serve alongside a different service's personnel, or a student may travel to a foreign country for a year of school. To experience the future and gather intel (if necessary), or visit the past and do research (historical, sociological, experiential).
What do you think of this idea?
What do you think of this idea?