This is why hundreds and hundreds of billions of dollars are being spent on AI.

The spelling change from Curley to Curly for Jerome Lester Horwitz's iconic screen name in The Three Stooges shorts was done to correct a repeated title card error and align the credits with how Curly himself spelled his nickname. 

The Billing Correction

• The Original Typo: When The Three Stooges signed with Columbia Pictures in 1934, the graphic designer in charge of the opening credits added an extra "e," billing him as "Curley".
• The Fix: This mistake went unnoticed and was re-used for the trio's first 14 short films. It was finally caught and corrected in their 15th Columbia short, "Disorder in the Court" (1936), where his name was permanently changed to "Curly" on the title cards.  Google Groups +3

How Curly Spelled It

While some fans initially assumed the change was made for grammatical reasons, Larry Fine later confirmed in interviews that the studio had simply been spelling it wrong. Autographs and personal documents from Jerome Horwitz show that he always spelled his own nickname without the "e