Time-travelling Killbot

There's a colossal explosion, a maelstrom of hellfire and shattered concrete that no doubt cost a packet. Soldiers scramble to escape the blast radius, clad in filthy rags that haven't been washed since the world ended. All is silent, the air heaving with smoke as a thick quagmire of dislodged mud forms. From it erupts a naked man, looking like he's spent the last ten years living in a Paris sewer. He stumbles forward, uncertain, then throws his arms skyward and says:

"AAAARRRRGGHHHHHWUUUUUUH!".

Yes, I've been watching Termintor Salvation, the latest installment in the wildly popular time-travelling killbot franchise. This beacon of modern cinema was directed by McG, with his siblings Whopper and Big Mac acting as producers. Christian Bale, he of the raspy voice and lighting rants, stars. He's assisted by well-built, all-round nondescript guy, Sam Rockwell (last seen playing giant blue marsupial No. 4).

Upon seeing this film, I noticed two things.

One: Everything is filthy (Robot holocausts probably cut the average shower time considerably).

Two: In the future, there are NO INDOOR VOICES. Almost every single character in the movie screams their lines like town criers at a Metallica concert.

This leads me to believe that the use of volume is actually a clever and highly sophisticated storytelling tool. It gives the story background without exposition. If everyone in the future shouts, there must be a reason for it, especially since loud noises attract metal monstosities whose main interests are a) murder, and b) you. Clearly, the creators of the film intended the audience to fill in some gaps for themselves, since real art has no need for silly things like the explanation of plot points.

Therefore, I choose to believe this: Before the robots officially took over, they executed a stealth campaign to weaken the humans first. They did this by making millions of sentient radios and distributing them across the country. These radios were instructed to, when switched on, gradually increase their volume, until it was at a painful pitch. This, coupled with extended drum 'n' bass mixes being given extra airtime by cybernetically enhanced DJs, would forever damage the general populaces hearing, so that they would be forced to SHOUT in order to make themselves HEARD. This would not only make the filthy humans easier to find and grind into a fine paste, but would also cause undue suffering and difficulty to an organic being, which is what every true machine wants.

*** ***

Remember, robots have only two settings: Malevolence, and the desire to cause harm and/or injury to another being.