The reason why there were so many typos in pirated books was not because the original copies were used, but because the pirates could not completely and accurately copy the text and typography of the original books. This was because the pirates might make some mistakes or oversights during the printing and copying process, resulting in the text and typography of the book being different from the original book. Pirates used the text and typography of the original book to make copies, but due to printing errors, scanning errors, and other reasons, the text and typography on the book might have some typos or inaccuracy. In addition, pirates may also have technical problems or poor printing quality, resulting in some problems in the paper, font, color, etc. on the book, which may also lead to typos on the book. Therefore, the typos on pirated books were not limited to the original copies, but because the pirates had quality problems in the copying and printing process.