comment: >
  
  The fact that (inaudible) is meant to represent any sound makes it useless.
context: This is a friendly reminder to read our rules.
  Remember, /r/Showerthoughts is for showerthoughts, not "thoughts had in the shower!"
  (For an explanation of what a "showerthought" is, please read this page.)
  Rule-breaking posts may result in bans. >
  
  Nope, it is to make clear that something was said, but nobody know's what.
  Usually secrets for nice plot twists. >
  
  You don't use (inaudible) for a plot twist. That'd be ridiculous. >
  
  Why are you watching with subtitles? Is it a foreign movie, or are you audibly impaired?
  Either way, you see someone talking and wonder what they said. 
  Inaudible makes it clear that no one knows. 
  If there where no subtitles your next thought would be that the person who did the subtitles did a bad job. >
  
  Still disagreeing with OP's point, but it's perfectly valid to watch with subtitles on without hearing impairment or it being a different language.
  Most of my social circle & I watch with them on. It's useful for accents, poor audio quality/volume, & just making sure you heard something correctly... It doesn't take too long to get used to it where you're focusing on watching the show, but almost unconsciously reading the captions
  Side note, it can also be entertaining to read the subtitles of a dubbed show because of the different word choices they use & sometimes weird translations >
  
  No. It's to tell those who can't hear dialogue that no one else can. Aka that the audience isn't meant to know (or that the sound department did a shit job that day)
  So that, rather than the transcriber doing a bad job, it's intentional or production fault.