"They do that by referring to every sentence in the English language that they can get their hands on."
In other words, they rely on statistics and trial and error more so than logic. It works better than might be expected in many cases --- but it is unreliable anywhere truth, logic and creativity are required.
In other words, they rely on statistics and trial and error more so than logic. It works better than might be expected in many cases --- but it is unreliable anywhere truth, logic and creativity are required.