Any book can have errors, but one book that's almost bound to have errors is an old, out-of-print (or even out-of-copyright) title that is published as an ebook by scanning the printed pages and then converting the resulting file into epub or Kindle format without carefully proofing every word. It might be because the pages weren't in great shape or it might be because the scanner wasn't the latest and greatest, but those kinds of books almost always have some errors. Sometimes they have many errors.
A lot of readers probably pay no attention, but in fact Kindle books are often updated after publication. This could be for reasons other than errors; the publisher might have added content, or enabled a new feature like X-Ray. But since the Kindle interface provides a way for the user to report content errors, I'm guessing the most common reason is fixing a typo or several typos. [Note: This only works on an actual Kindle. The Kindle app on my Android phone, my PC, and my tablet do not have this function. I don't know about the iPhone and/or iPad versions. If you know, please leave me a comment.]
If you feel like it, you can send Amazon info about errors using the menu that pops up when you highlight text. The example below is highly typical of the kind of errors you'll see in scanned books. "For two pins" was a common expression, but the scanner made it into "Pot two pins."
Once you tap the three dots to get the menu, you see an option to report a content error.
Amazon now asks you to identify the error.
This gave me a screen where I could input the correction. In a way, Amazon is making readers into proofreaders.
If you click the update button, Amazon first sends a warning.