I normally don't type a lot in my Mac, because I use it mostly to watch Youtube and other things. However, I started doing some projects and I've had to type a lot in Safari and Notes, and I realized that the OS autocorrect is making some face-palming changes: It changes THAN to THEN, and if you correctly type THAN it puts it in red dotted line: Example: I prefer to use pen than pencil. I also changes THEIR to THEY'RE Example: I don't like their games. Are we really getting into an age when even professional things have bad grammar as default? What's next, change it officially in the dictionary? English is not my first language, and I have never had any problem understanding the differences. Why is it what so many people now speak/type so badly? How can I tell my OS not to be retarded?