*Captain's Log, Stardate 45959.1. The Enterprise has been recalled to Sector 001 on a priority mission. All we have been told is that evidence has been discovered indicating the presence of extraterrestrials on Earth five centuries ago.
*Captain's Log, Stardate 45960.2. We have transported the materials discovered in the cavern back to the ship for analysis. I wish I could be as dispassionate about the implications as my second officer.
"Captain's Log, supplemental. Close range sensor analysis has yielded no further trace of Commander Data. Despite the emotional repercussions of the crew, I must move this mission forward.
"Captain's Log, Stardate 45965.3. An away team has beamed to the surface with a device that may enable them to phase shift into the alien world.
Data (Brent Spiner) is sent back in time to August 13, 1893, according to the newspaper he picks up.
This is the first episode of the series to involve time travel.
This episode marks the final appearance of Marc Alaimo
on the series. He would be taking a regular recurring role as Gul Dukat
on Deep Space Nine, which would be running simultaneous with the final two season of ST:TNG, presumably complicating scheduling.
Data asks Jack London "What do you think it is gonna be?" However, it has been established in numerous previous episodes that Data cannot automatically use contractions such as "gonna." It is possible he can consciously elect to use them, or possibly he has corrected this problem, though he continues to avoid them for personal reasons.
In reality, Samuel Clemens was touring in Europe in 1893. He only returned to the United States briefly in order to move his family from New York City to Berlin, Germany. As a result, it is very unlikely he was in San Francisco in August 1893.
Although Samuel Clemens
is portrayed as being an old man with white hair throughout this two-parter, he was only 58 in 1893 and, according to numerous photographs, his hair had not yet turned white at that time.
Title: Time's Arrow
The term Arrow of Time
, or Time’s Arrow
, was coined in 1927 by astronomer Arthur Eddington, and is used to distinguish a direction of time on a four-dimensional relativistic map of the world (three dimensions of space plus one dimension of time). According to Eddington, the direction is inherent
in the organization of both sub/atomic particles and in the motion of bodies. There is a related concept of time symmetry, which involves processes which don't inherently reveal time's arrow, as opposed to time asymmetric events, which clearly reveal this direction. Hence, the Arrow of Time is any process which exhibits this time asymmetry.
The aliens in this storyline have a mild resemblance to the concept of vampires, but also, and perhaps even more so, to the Overlords of Delgon from E.E."Doc" Smith
series. They, too, evolved to directly feed off the life force of other living beings.