Character mistake: When the away team transports down to the planet, Data is wearing three full rank pips denoting the rank of a full Commander, rather than his actual rank of Lieutenant Commander. (00:09:39)

Star Trek: The Next Generation (1987)
2 character mistakes in Datalore - chronological order
Encounter at Farpoint (1) - S1-E1
Other mistake: When Q the Judge enters on his throne, at one point, the hydraulic arm the throne is on is visible, despite being black to blend in. Conversely, in "All Good Things...", the final episode, the arm is missing having been matted out by CGI techniques. (00:21:45)
Commander William T. Riker: In your position it's important to ask yourself one question: what would Picard do?
Wesley Crusher: He'd listen to everyone's opinion and then make his own decision.
Question: Near the end when they are in the holodeck for the memorial ceremony for Lt. Yar, Dr. Crusher's uniform is green and seconds later it is blue. After watching it several times, it does not appear to be a trick of the light. What happened here? Why would she have on a green uniform in the first place?
Chosen answer: The uniform does indeed change colour. It may be due to the need for a green screen in part, or perhaps some lighting altering our perception. That being said, it certainly looks green at the start, blue thereafter.
The show has been done in HD now and not sure if they fix this problem.





Suggested correction: That characteristic was not added to the character until season two. In the first season, Data uses contractions on a number of occasions.
It's still a possible mistake, even if it wasn't part of season 1 scripting. Just because we only learn later that Data doesn't use contractions, doesn't make this mistake invalid. We learn Data was specifically constructed that way and hadn't been able to use contraction since being created, which means all of season 1 he shouldn't be using contractions. Although it would probably be best to submit it as a mistake in season 2 when it's mentioned that it contradicts what was established.
Bishop73
It would only be a mistake if he used the contraction after the trait was established for the character.
Possibly, but that's not how mistakes on this site work seem to work. It could still be a valid mistake in the context of the entire show since the character trait had in fact been established. It's the same way for when shows do something like establish a character's birth-date in later seasons, but when episodes from earlier season have the character at the wrong age. Although it would probably be best to submit it as a mistake in season 2 when it's mentioned that it contradicts what was established.
Bishop73