At his desk section at Umbrella Health, Dave has an award reading "Terminator of the Month". While "terminator" is used in the context of insurance to refer to someone who's for responsible for ending coverage periods or plans, it also fits well as in reference to "terminating" a human life, given the nature of Umbrella Health and its policy.
There's an aquarium full of piranhas at William's office. Piranhas aren't common fishes to be placed inside building aquariums like that, due to their status as a predatory species. They can allude as an Animal Motif to Umbrella Health being predatory for humans in itself.
The way piranhas eat is to rapidly bite away at their prey; Williams is ultimately killed with a device that pumps hydrofluoric acid into his body, eating away at his insides to the point where his body melts in half.
Most people seem to complain that the people in the various traps really didn't deserve to die; the insurance man was the real bad guy in the like. So what's the point of their deaths? Well, like always, Jigsaw says "live or die, make your choice" to his true victim, in this case Mr. Insurance. Playing off the themes of one life vs. another, think about what would've happened if William had decided that Hank's life was more important than his and committed suicide by hyperventilating and getting his chest crushed. Would the merry-go-round or any of the other traps ever have activated? Ultimately, by not seeing the intrinsic value of a lowly but clean janitor's life against his own tainted life, the blood is all on his hands for his initial selfish decision. - Teh Puppitz
Also, William may have deserved his death simply because when he chose who deserved to live, he let ALL his male employees die, the same way he had let both Jigsaw and Harold die, thus showing he hadn't learned his lesson - he dismissed a gender as a whole - and failing the test. Also, the Shotgun Carousel seems to be programmed to keep the worst people alive as long as possible (notice that Emily is 2nd while Shelby is 5th) similar to the method used by the killer in And Then There Were None, openly suggesting William to save the first two (Aaron and Emily). - Marc 3 K
What many people — and apparently Jigsaw — failed to consider was that the insurance people are just middlemen. The real culprits of Harold's death would be the doctors who refused to treat him unless they got paid.
The point of insurance is to cover treatment — which insurance companies do their best to wriggle out of. They're "middlemen" who are deliberately condemning the people who hired them to death for money. Doctors aren't freelance, they work for hospitals and if they treat people for free they'd just get fired.
The scenes of William’s final test and Jill’s attempted execution of Hoffman are played side-by-side. Both situations involve revenge: Brett decides to murder William, ignoring the pleading of Pamela and his mother’s refusal to do as to avenge his father, who got screwed over for insurance and died because William’s policy refused him treatment over a loophole in his medical history; Jill leaves Hoffman to be executed with an improved version of the Reverse Bear Trap after learning that Hoffman had blackmailed Amanda during the events of the third movie, leading to her death and getting John killed, all so that he could have control over John’s legacy as Jigsaw.
There's no indication that the button for the carousel trap actually disables after William presses it twice. What if there wasn't a limit? What if he could have saved all six of them?
If John could predict human behavior, then he knew that, at the end of the main game, Brent would kill William. This means that he knew William would die, even if he had redeemed himself and learned his lesson, which, considering all he went through and who he chose to let live, he certainly did. This means that William's game was no more of a test than Amanda's traps; it was only a death trap. Yes, that means Jigsaw is guilty of using one of his games as revenge (which he is usually against) rather than trying to teach someone a lesson. The fact that this game was part of his "final wish" says something about his priorities.
John could also predict that William was going to save only the women, which could also have been planned to enrage Brent further, because in his imbalanced state, the kid could easily be swayed to believe William's decision of refusing to cover his dad was based partly on gender.
I think that people might be seriously over-interpreting this sexism angle - I never even noticed it when I saw the movie and I don't recall any references being made in the characters' dialogue to this being an issue.
Well, there were Josh's last words, when he yelled at him for being "pussy-whipped" and how "a bitch" takes precedence...
That only proves that Josh is sexist, not that William is.
Keep in mind that he did decide to spare the old lady with a family over a young male loner. And then he let a supposed pregnant woman (Gena) die because he couldn't make up his mind; the other male characters didn't put much of argument in their favor (one of them even tried to bribe him). I'm not sure gender was the issue.
Well, apart from Emily nobody made much of an argument in their favor. AND he still didn't save any man, and one of the three women he saves was exposed as lying, along with the only one he didn't, so we can say gender IS an issue. And it makes sense that these choices could be interpreted by an angry grieving teenager as sexism, because you can make the case that it unconsciously is. And TBH, killing the loner because 'no one would miss him' was the wrong choice to make.
Considering how messed up William's head clearly was by the time the carousel's potential targets were reduced to two, it's entirely plausible that he decided not to decide at all, and just left it to luck: whichever person was the next to halt in front of the shotgun, male or female, he'd save. It's not like he was demonstrably counting how many spaces it turned between one firing and the next, after all; between the pain, horror, guilt, grief, fear, and having the entire Dog Pit shouting at him and each other non-stop, the guy was barely coherent by then. Hell, he couldn't even look at the trap anymore.
Adding to this theory, you can actually see William placing his hand over the two buttons before the carousel stopped at the next person.
Brent kills William in cold blood right in front of his innocent sister, meaning there's a witness who's likely going to tell the police about his unnecessary actions. True, the viewer probably doesn't give a shit about Brent, but what about his mom? The poor woman just lost her husband and now her son is likely going to do time in prison.
