3Avatar Operators in Avatar
If you never actually watched the movie and think Avatar is just about a race of giant Smurf people, an Avatar is actually a lab-grown alien body that can be operated by a human like a remote control toy, via mind link. It's a little like Second Life meets The Island of Doctor Moreau.
The Second Life of Doctor Moreau would be an excellent zombie movie.
So in the film, a man has been training for years to operate one of these Avatars, but he unexpectedly dies. Because the system requires the human and alien body to be a genetic match, the company running the program reaches out to the dead guy's brother, Jake Sully, to do it in his place. And Jake, as you can guess, has absolutely no training.
"And we'll let anyone ride in the suits. Literally anyone. We've got some chefs running around out there."
To give you the proper context, Jake's brother spent three years in Avatar training and five years learning the language of the Na'vi (the aliens the Avatar lets him hang around with). And, more importantly, he logged 520 hours in the Avatar just practicing using the body.
So What's the Problem?
Within two minutes of being in the Avatar, Jake is already running and jumping. The very first time out, he's using his Avatar body to shoot an assault rifle:
"Rambo training is standard for the Future Marines."
The film briefly mentions Jake's lack of experience, but other than a momentary stumble when he first stands up in the body, we never see him struggle with it. Within days or weeks, Jake is fighting, climbing, using weapons with deadly accuracy and riding flying space pterodactyls. So what the hell did his brother spend hundreds of hours learning? How to play a Na'vi banjo?
And even somebody with years of experience in an Avatar Na'vi body should still be behind the curve compared to people who, you know, were born in one. Yet the untrained Jake progresses faster than even the Na'vi themselves, especially when it comes to their most sacred rite of passage: riding a goddamn banshee. This is a flying, thrashing beast that leaves no margin for error -- if you get thrown off once, you're splattered on the rocks a thousand feet below. There is no practicing it.
Avatar's ecosystem works remarkably like Grand Theft Auto.
Then, with just a few months experience walking and breathing as a Na'vi, Jake becomes just the sixth Na'vi in history to link to Toruk, the most badass flying dragon of all. That's not the sixth Avatar, or the sixth Na'vi in their tribe -- that's the sixth of the entire Na'vi species, ever. Holy shit, being a Na'vi is easy!
2Ghostbuster in Ghostbusters
For just three dudes, the Ghostbusters accomplished quite a bit. They not only proved the existence of life after death, but also found a way to make it suffer. They even created guns that can trap ghosts in a tiny prison with a hundred other tortured souls (because screw you for having unresolved issues after you're dead, buddy).
He's the ghost of a fitness instructor, making up for lost gluttony.
And while their equipment is dangerous (more on that in a moment), that's fine -- the three of them are trained scientists. They designed and built their ghost weapons themselves. They know what they're doing.
So What's the Problem?
You know who doesn't know what he's doing? The new guy they bring on board later, Winston Zeddemore. His training consists of two lines in the entire movie: "The light is green, the trap is clean" and "Don't cross the streams."
"Unless we decide on the spur of the moment to cross the streams."
Consider for a moment who Winston was before he joined the Ghostbusters. Oh, you don't know? Well, neither does anybody else, because no one in the film ever asks. The only thing we know for sure is that he has no background in paranormal studies and no Ph.D., and that he's completely willing to compromise his system of beliefs if the job calls for it.
"Hell yes I'll wear an unlicensed nuclear-whatever in a densely populated city."
Ray hires him without so much as a glance at his resume, and we never see any indication that he has particular skills that qualify him to bust ghosts. The DVD commentary says they originally intended Winston to be the smartest of all of them but abandoned all that and changed him to the everyman character in order to explain things in layman's terms.
So basically they made him just like you, and despite what your Halloween costume may suggest, you are not qualified to be a Ghostbuster. So why do we blame these guys more than the Men in Black? Well, the MIB at least looked into Will Smith first, and presumably did a background check to make sure he wasn't part of a terror cell looking to use dangerous tech to destroy the city. But also, there is actually more at stake when a Ghostbuster fucks up.
This can't be good for the local economy.
Specifically, using their anti-ghost proton packs wrong could end the universe. All it takes is crossing the streams, and it's not like there's a good method for not crossing them. They are all firing at the same target with guns that are about as easy to control as fire hoses, and they have literally nowhere to practice. They either get it right or blink out of existence.
Still, they trust the first guy who applies for the job with the fate of all life everywhere. Suddenly that EPA representative who wants to shut everything down doesn't seem like such a bad guy, does he?
We're still pretty sure he has no dick.