Two recent dreams have involved language. I don’t usually remember my dreams in much detail but these were short and involved language. Two days ago Facebook informed me that it was the birthday of one former student who returned to Hungary. I wished him happy birthday in English and he replied in English. That night I dreamed I was in a classroom. The first student greeted me in Korean, which I speak to some extent. The second student greeted me in Hungarian. Hang on … I don’t speak Hungarian, so how did this person in my dream speak it, and how did I know that it was Hungarian? Either I have absorbed some Hungarian, somewhere, some time, somehow, or my subconscious just made up something which sounded approximately appropriate and I just knew it was meant to be Hungarian.
Longer ago I had a dream in the thriller genre. The only part I remember is one person pointing a gun at another person, and the other person saying:
Do not shoot.
Do not shoot and Don’t shoot mean the same thing, but contracted forms are less formal and, in this case, more urgent. I can’t imagine anyone facing the business end of a gun saying Do not shoot instead of Don’t shoot, but that’s what my subconscious made that person say. Do not shoot (until, unless …) is more like something said or written in a firearms safety course, or said by a police/military commander. Google Ngrams doesn’t help, processing do not and don’t in the same way. A general Google search shows about 15 million results for “don’t shoot” (in quotation marks for exact match) and 2.5 million for “do not shoot”.
I don’t (or do not) know what conclusions I can draw from these dreams.
I kept an extensive diary during my first stay in Korea 2006-09, which often throws light on my own usage. There are 6 instances of do not and 200 of don’t, including 58 of I don’t know, so I obviously spent most of that time in a state of considerable ignorance.