Name That Episode, TNG Edition...

[Armus]

TNG did a string of memory loss episodes in seasons 4 and 5, so I'm guessing the episode is one of those?

 

[CommanderTrip]

^^True, also theres the Crusher ep where she remembers people who others forgot. But I read the OP's clue as only a singular person remembering wrong, and Mind's eye was the first that came to mind. Although TBH, "Remember Me" first popped into my head.

 

[Discofan]

It's time for another clue:

Data and synthehol are seen as signs of the times...

 

[sekundant]

Relics?

 

[Discofan]

Relics?

That's it!

Explanations:

1) Someone's remembering wrong: Scotty should have remembered that (from his point of view) Kirk was dead.

2) Scotty made a somewhat rude remark about Data and Synthehol.

 

[sekundant]

Thank you for the explanation. Great episode!
First clue:
As I read about George R.R. Martin's patchface, I knew from where he got his inspiration.

 

[JirinPanthosa]

Cost of Living?

 

[sekundant]

Bravo, Bravisimmo!
Wind dancers patchface, it was a little bit horrifying, isn't it?
Your turn!

 

[JirinPanthosa]

Clue: Illegal puppies.

 

[TribbleFeeder]

True Q!!

 

[JirinPanthosa]

Correct.

Hey, how come Data gets a cat but Amanda can't have puppies?

 

[TribbleFeeder]

Correct.

Hey, how come Data gets a cat but Amanda can't have puppies?

I know! It’s speciesism!

Clue: New spinal column!

 

[Tosk]

Ethics.

 

[TribbleFeeder]

Ethics.

Yep! Your turn

 

[Tosk]

Cool.

Clue #1: Three seats taken, one now empty.

 

[Tosk]

Clue #2: Each person has one piece of the puzzle.

 

[sekundant]

The Chase?

 

[Discofan]

The Chase?

It works with the second clue but the first one doesn't make sense.

 

[Tosk]

Clue #3: No matter what planet you're from, you use a bug to listen in on private conversations.

 

[Sakonna]

"Gambit" two-parter?