ChatGPT Is a Bullshitter
ChatGPT is a bullshitter .. well that's not necessarily bad. I have acquaintances who fit that description quite well, but I know them, and it is important to know that with ChatGPT.

I began the conversation with 'Was Jack Nicholson's first film the Little Shop of Horrors'? It said 'No - his first film was "The Cry Baby Killer." OK. So maybe I was one off. So ...
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What was Jack Nicholson's second film
ChatGPT

Jack Nicholson's second film was titled "The Cry Baby Killer." It was released in 1958 and directed by Jus Addiss. The film is a low-budget crime drama in which Nicholson plays the lead role of Jimmy Wallace, a troubled teenager who becomes involved in a hostage situation after a violent confrontation. Although it wasn't a major success, "The Cry Baby Killer" marked one of Nicholson's early appearances in film before he went on to become one of Hollywood's most acclaimed and iconic actors.
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Well that's really odd so my curiosity was peaked:
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Was Jack Nicholson in the original little shop of horrors
ChatGPT

No, Jack Nicholson did not appear in the original "Little Shop of Horrors." The original "Little Shop of Horrors" is a 1960 low-budget horror comedy film directed by Roger Corman. It is known for its campy and dark humor. Jack Nicholson, at that time, was still a relatively unknown actor and did not have a role in the film. However, the film did feature Jonathan Haze, Jackie Joseph, and Mel Welles in the main roles. Jack Nicholson gained wider recognition in the 1970s with films like "Five Easy Pieces," "Easy Rider," and "One Flew Over the Cuckoo's Nest."

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User
List me all the movies Jack Nicholson has been in
ChatGPT

Certainly! Here is a list of some notable movies that Jack Nicholson has been in:

The Cry Baby Killer (1958)
The Wild Ride (1960)
The Little Shop of Horrors (1960)
Easy Rider (1969)
Five Easy Pieces (1970)
Carnal Knowledge (1971)
The Last Detail (1973)
Chinatown (1974)
One Flew Over the Cuckoo's Nest (1975)
The Missouri Breaks (1976)
The Shining (1980)
Reds (1981)
Terms of Endearment (1983)
Prizzi's Honor (1985)
The Witches of Eastwick (1987)
Batman (1989)
A Few Good Men (1992)
Hoffa (1992)
As Good as It Gets (1997)
The Departed (2006)
The Bucket List (2007)
About Schmidt (2002)
Anger Management (2003)
The Pledge (2001)
Something's Gotta Give (2003)

Please note that this is not an exhaustive list, but it includes some of the most notable films in Jack Nicholson's career. He has had a long and successful acting career with numerous acclaimed performances.
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Wow, that is going to need some explaining -- bullshitter to the rescue:
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So, has Jack Nicholson appeared in the Little Shop of Horrors
ChatGPT

I apologize for the incorrect information provided earlier. Yes, Jack Nicholson did appear in "Little Shop of Horrors," but it was not the 1960 original film directed by Roger Corman. Jack Nicholson had a small role in the 1960 film, but it was actually a different "Little Shop of Horrors" adaptation. The version in which Jack Nicholson appeared is the 1960 comedy-horror musical directed by Charles B. Griffith, which was based on the original stage musical. In this version, Nicholson played the character of Wilbur Force, a masochistic dental patient. I apologize for any confusion caused by the previous response.

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Well -- as all good bullshitters do a bit of truth and then more fabrications. Indeed JN did play Wilbur Force etc but there was no 1960 Comedy-Horror-Musical version (there was in 1986) and Charles B. Griffith was a writer of LSOH not the director -- so you can see where it got it's hallucination from. But why it hallucinated in the first place I (and presumably 150 billion parameters) do not know. Like all good bullshitters it was recursive ...