Although miscommunication events happen and increase with time, one has to remember that they are trying to follow directions; it is just that their brain has connected to a different memory cell. Short-term memory could also be a reason. Just walking from one room to another, and the request is gone, and the brain made up another request. Not much one can do. My Hubby suffers from this and has added something new. He was asleep, then woke up, came into the room where I was, and told me a very detailed account of an event that never happened. This is the second time he has had a hallucination, and it was really real to him. He has vascular dementia.