Goofs

Ernest Hemingway and his first wife lived in Paris from November 1921 to July 1922, then from January 1924 to November 1926, when they separated.

Toulouse-Lautrec's condition prevented his legs from growing, but his torso was normal-sized, so sitting in a chair in Maxime's, he would appear to be normal height rather than short.

At the end, Gil is watching the Eiffel Tower sparkle, and the clock is striking midnight. The light effects on the tower end at 11:45 pm.

At one point Gil says that Scott explained the concept of "cognitive dissonance" to him. This term was not in wide use until the 1950s. Gil was referring to a quotation often attributed to F. Scott Fitzgerald: "The test of a first-rate intelligence is the ability to hold two opposing ideas in mind at the same time and still retain the ability to function."

Gil said that F. Scott Fitzgerald "talked about it"; it can be interpreted that Fitzgerald didn't use the specific term but likely spoke the attributed quote. Gil would have recognized the quote and considered that "talking about" cognitive dissonance".

Finding themselves in the 1890s, Adriana says to Gil: "it's the start of the Belle Époque". La Belle Époque is dated conventionally from the end of the Franco-Prussian War in 1871 to the outbreak of World War I in 1914.

However, just as Christians in Rome in A.D. 35 didn't know that modern timelines would be divided by Christ's birth, someone from 1920s France might not know the "conventional" start of La Belle Époque.

Paul is wrong (and the tour guide is correct): Camille Claudel was indeed Auguste Rodin's mistress and not his wife.

This is not a character error but is actually how the character is supposed to be portrayed - an overly confident, though often wrong, braggart.

The first paragraph of Gil's novel contains the word 'camp', in the context of something being overdone to the point of risibility. This definition of 'camp' wasn't current in the 1920s, but Gertrude Stein and Ernest Hemingway don't question Gil about it after they read the novel.

Actually, Merriam Webster states "the earliest known use of camp (in the sense being considered here) comes in 1909. The sense must have already existed, since this citation was from something of a dictionary, and the compilers of these works tend not to make words up." Therefore, it is nearly certain that Hemmingway and Stein would have been familiar with the usage in the 1920s.

When Gil is visiting Versailles and they are by the stairs and facing the garden, it seems that Gil has the fly of his pants opened when he faces the camera.

Sometimes a gentleman simply forgets to zip or fasten his fly; it may be considered a personal error, but it is not necessarily a movie Goof.

In the opening titles, a girl crossing Champs-Élysées at a traffic light is waving to the camera.

(at around 4 mins) As Gil and Inez talk over the opening credits, Rachel McAdams's Canadian accent is quite audible when she says "What's wonderful *about* getting wet?" (This is shortly before Inez says she could never live outside the USA.)

Zelda Fitzgerald says to Gil, "You have a glazed look in your eye, stunned, stupefied, anesthetized, lobotomized..." Lobotomies were introduced in 1935.

Getrude Stein refers to 'science fiction'. In the 1920s, the usual term was 'scientific romance', although Hugo Gernsback (editor of the first sf magazine, Amazing Stories, first published April 1926) unsuccessfully attempted to popularise 'scientifiction'. 'Science fiction' wasn't coined until the 1930s.

At the time the film is set, Ernest Hemingway worked as a foreign correspondent for The Toronto Star newspaper and had not yet published a novel.

When Gil and Adriana are walking in Pigalle among the prostitutes, modern 'bumpy' paving stones for blind people can be seen as they cross the road.

Gil and Adriana dance to the tune of the song 'Parlez-moi d'Amour', not written until 1930.

Over a bottle of red wine, Gil decides he just needs to share the truth with someone, so he proceeds to tell Dali and company that he's from the 2000th millennium - obviously meaning to say the 2,000s, the 20th millennium or the 21st century.

The hotel physician called to attend John was going to listen to his heart, and he was using a Littmann stethoscope. He inserted it so that the slant of the earpieces was backwards. A person's ear canals slant toward the front and the earpieces were angled toward the rear.

When the doctor is checking John's blood pressure in the hotel room, he doesn't put the blood pressure cuff on properly. Then, when the doctor is finished, the blood pressure cuff slides on John's arm. In reality, it is put on tight initially and wouldn't slide when fully deflated.