After the dump truck T-bones the ambulance, the paramedics pull their injured partner out of the driver's side of the bus, with plenty of room to work on him. In the following air-borne shot, the dump truck is still slammed into the cab of the ambulance, with no room between them.
The authorities think Cassie is fugitive so how is she able to leave from airport? JFK, LaGuardia and Newerk airports would be on the look as she would have departed from one of them.
Ezekiel is first seen in 1973 but when it flashes forward to 2003 which is 30 years later he looks exactly the same no aging at all.
Myasthenia gravis cannot be diagnosed before birth. It is not a genetic condition but an autoimmune disorder.
Cassandra tells the girls to "charge the AED," despite referring to a regular Defibrillator. AED stands for Automatic External Defibrillator.
Near the end in the water, the neon sign letters are still lit after coming off the sign, falling off the building, into the river, and slowly sinking. Namely the S. As soon as the power was disconnected, the lights should have lost their illumination. Perhaps they would have dimly glowed for a few seconds, but not for the length of time in the movie.
The large, box type ambulance that Cassie drives to rescue the girls in Times Square is at least 8.5 feet tall; as most ambulances are about this height or more. Very few parking garages have this much clearance inside. Most likely more like 7 feet. There is no way she could have driven through to make the jump through the billboard and into the street.
Cassie drives a late 90s Ford Crown Victoria taxi through the diner entrance, however the none of the airbags deploy.
Cassandra teaches CPR to Julia, Anya, and Mattie. She shows them the chest compressions. The correct procedure is 30 compressions to 2 breaths for an adult. In 2010, guidance was changed to omit the breathing for less-trained volunteers. As this was set in 2003 (soon after 9/11), a well-trained paramedic such as Cassandra may have been taught to teach others the compressions and not the breathing techniques in order to maximize the number of untrained helpers in a catastrophe.
A dump truck T-bones an ambulance while traveling 30+ MPH. An aerial shot later reveals that the road in front of the dump truck dead ends at a river 50 feet ahead.
Cassie removes the number plates from the taxi to prevent recognition when she dumps it, but NY taxis all have their taxi number on the registration sticker in the window as well as either PAINTED on several locations OR on the light panel on the roof (this case), so anybody driving or walking past could tell which taxi it was.
The outfit of Cassandra in the trailer as Madame Web is not the same than the appeared in the movie.
At 11:49 the character opens a window followed by a cat walking in for milk. About 20 seconds later that window is closed.
When the girls are in the diner, a man sees a newspaper article about the "Missing Teenagers" which at this point had only been missing for a few hours. Meaning somebody would have had to write the article, print it, and distribute it within that time frame.
The road sign reading "NO OFICIALES EN ÉSTA ÁREA" should read "NO OFICIALES EN ESTE ÁREA" in grammatical Spanish.
In the diner Mattie says she knows the words to the song Toxic by Britney Spears but earlier the radio DJ said the song wasn't a hit yet.
Madame Web is set in 2003, yet the guy on the subway is playing a game on the Sony PlayStation Portable (PSP). The PSP wasn't released in Japan until December of 2004 and in North America until March of 2005.
The year is 2003 but the computer Amaria uses to track the girls looks very modern with a flat screen and keyboard.
Despite being set in 2003, there are a number of shots where more modern buildings can be seen. For instance, there is a shot outside of Grand Central Station that clearly shows One Vanderbilt, a supertall skyscraper that was completed in 2020.
There are multiple scenes where Ezekiel's lip movement does not match with what he's saying.
In one scene, the sun is shining brightly at 5:00 AM. The location is near New York City where the sun never rises before 5:24 AM.
While she's wanted by the police accused of trying to kill some police officers, Cassie is able to drive a taxi without license plates, leave the car in the airport parking to travel Peru, and later come back to drive the taxi again back to the forest looking for Julia, Anya and Mattie. Noone in the airport identifies Cassie as a woman with a warrant on her.
Ben Parker tells Cassie that he's dating a girl he met recently, but he never says that she's May. In the same way, his sister, Mary Parker, never reveals that the name of the baby is Peter (future Spider-Man).
While they are in the forest, Julia, Anya and Mattie arrive to the diner bar faster walking than later Cassie driving the taxi from the same point.
In the final confrontation, Cassie is capable to duplicate herself to bi-locate in the right places to save the girls but she's incapable to duplicate herself to kill Ezekiel and prevent that a rocket explode on her causing not only that she fall into the Hudson river but she ends blind and paralyzed to use a wheelchair.
Julia, Anya and Mattie dance together above a table in a bar to please a boys and the bar's owner never appears to complain about the scandal they are making to get them off the table.