Factual error: When they are in paradise the law enforcement is all wrong from the uniforms to the cars. In the State of Ohio, every county Sheriff Department looks the same (black and gold cars, black uniform shirt, grey pants, stetson style hat), they are all regulated by the Buckeye State Sheriff's Association. In the movie the "local sheriff" wears a brown uniform and drives a car with white doors. This is not accurate. The front and back of the car is accurate with the gold stripes, and the license plates on the cars are also accurate, but those are the only parts of the cars/uniforms true to the state of Ohio.
Factual error: When Jason Bateman first meets the rookies at the roadblock, some Saguaro cacti can be seen in the background. Saguaro are not indigenous to Nevada.
Factual error: Julia Roberts character orders Pizza and Wings, gives the driver one bill (guessing it's a $20). Says she's giving a $12 tip. No way Pizza and Wings costs $8, certainly not in California.
Factual error: While Hadrian's Wall itself is accurately depicted, its use and meaning to the Romans is not. The Wall did not demarcate a line north of which no Romans soldier would venture out of fear of the locals. The area north of the wall was too sparsely populated to produce a serious threat to a sizable Roman force and the Romans would have regularly patrolled there. In fact just two years after the events in the movie are set, the Romans constructed the Antonine Wall 60 miles north of Hadrian's Wall, running approximately between today's Glasgow and Edinburgh. The plot more closely matches the experience of the Romans in Germania in AD9 when three Roman legions were wiped out in the Teutoburg Forest. The Romans went to great lengths to recover the Eagles lost in this defeat and did so through a combination of diplomacy and military successes.
Factual error: In the helicopter scene, the assassin is using a Gatling-type weapon with a set of rotating barrels. However, the fire is coming out of the central spot where the axis should be. That's not how Gatling guns work. (00:42:25)
Factual error: The security guard in the bank is carrying a revolver as a sidearm but has semi-automatic magazine pouches on his duty belt.
Factual error: When Benjamin's brother arrives in his car with the bear's fish, he opens the trunk with a remote key. The car is a Mercedes 240 Diesel (to be more precise, a W123 series), built from 1975 to 1986. Mercedes first introduced a remote key system to the W140 series at the beginning of the nineties. (01:35:45)
Factual error: The scene showing Paris at night displays heavy traffic and bright car headlights over the distance. Both were not possible to be seen at time the story occurs, circa 1920's.
Factual error: Throughout the film's high-energy choreographed fight sequences, Rama is repeatedly struck in the arms, legs and back with machetes. He not only suffers no wounds, but his tactical gear isn't even lacerated.
Suggested correction: Depending on what part of town his gear, the angle and strength of the blow, and how sharp the machete is, there may have only been negligible cuts. Apparently loose fitting clothes can sometimes be enough to keep a blade from cutting some of the time.
Rama's gear doesn't show even minimal lacerations or abrasions after multiple attacks.
Factual error: Jerry digs up a natural gas pipeline in the backyard and jerks it so hard that a pipe coupling in Charlie's house breaks, venting natural gas into the house for about 4 seconds. Then Jerry uses a cigarette lighter to send a flame through the pipeline, exploding Charlie's house like a fire bomb, catching virtually every room in the house on fire. In reality, it would take an hour or more for vented natural gas to accumulate sufficiently to blow up a house, for one thing. For another thing, Jerry broke the gas pipeline in the backyard in order to ignite it; so, while the broken pipeline leading to Charlie's house had no gas pressure, the pressurized side of the pipeline was still in the backyard with Jerry. Meaning, Jerry himself should have been engulfed in fire as soon as he sparked a flame.
Factual error: Colonel Meyer's promotions are listed in his SS ID card as Hauptmann, Oberstleutnant and Oberst. Since the SS used a different ranking system from the Wehrmacht, they should actually be Hauptsturmführer, Obersturmbannführer and Standartenführer.
Factual error: The term mayor of Paris was abolished from 1871 till 1977. But we see Victor Maynott wants to join the mayor campaign in 1910.
Factual error: The guys are trying to find a seedy bar and are using the GPS with Gregory talking to them. The map shows them moving in one direction but the streets are diagonal from where they are going.
Factual error: In the medicine cabinet, when Margaret is emptying it, a box of Rite-Aid Bandages is visible. Rite-Aid is an American chain of drug stores, not in the UK. And the Brits call the product plasters.
Factual error: In his crude attempt to replicate the Human Centipede surgical procedure, Martin employs several handyman tools, including a carpenter's staple gun (using T50 staples as sutures). Problem is, carpenter's staples would never join soft human body tissues, they'd pull right out with little effort (T50 staples only join to very solid base materials, such as wood). Martin's victims, hysterical as they were, could have freed themselves from the T50 staples almost immediately.
Factual error: When Mitch Albom is with Rabbi Albert Lewis in his rabbinical office/study they discuss an empty folder on the rabbi's bookcase labeled "God". Religious Jews as this rabbi was, know not to spell out the deity's name, but write it as "G-d" instead.
Factual error: When D'artagnan and the musketeers are infiltrating the Tower of London, the king's guards are seen with the Tudor Rose crest on their tunics. By the time stated at the beginning of the movie, the last Tudor monarch (Elizabeth I) had been dead for 80+ years.
Factual error: The young priest sees images of a red-eyed horse, but later, it is referred to as a mule, which looks much more like a donkey.
Factual error: Spoiler alert - When Henry's body is recovered under the 4th Street Bridge in Los Angeles, the 6th street bridge and the 7th street bridge (the one that he fell off) are each visible in the background. Meanwhile the water is visible moving towards the 7th street bridge which indicates that his corpse floated against the current. (00:22:20)
Factual error: When Jamie answers Dylan's phone and his ex-girlfriend shouts and then hangs up, you can hear a hang up tone. This isn't possible on a cell phone.