Star Trek IV: The Voyage Home questions and answers

Star Trek IV: The Voyage Home (1986) - 1 question

Directed by Leonard Nimoy, starring Catherine Hicks, DeForest Kelley, George Takei, James Doohan, Leonard Nimoy, Nichelle Nichols, Walter Koenig, William Shatner

The "questions" section is for any random questions that occurred to you while watching this film, or anything you didn't entirely understand, and which Google or the IMDb can't help with. Submit them as a question, and hopefully someone will answer (the bold comments in brackets) - check back regularly. If the answer is wrong, or missing information, please use the "clarify answer" option. Don't feel limited - want to know what music played in a certain scene? Whether this was the first film to use a certain effect? Here's the place to ask!

What exactly was Scotty's reason as to why giving the Company boss the formula for the one inch glass wouldn't alter the future? He gave a brief response, but I honestly can't think of any reason why it wouldn't do any future damage. [Scotty says "Why? How do you know he didn't invent the thing!" If the man was in fact the inventor, this would only cause a slight causality loop problem - he "invents" it because they gave it to him, but they only know it because he "invented" it. However, since Sulu said earlier in the movie that it was about 150 years too early for transparent aluminum, it would seem they do know this, so it wasn't a smart thing to do. Of course, the real flaw in the plot is that they need the tank to be transparent at all.] Answered by Myridon