This might have been amusing if it it wasn't so sad. My wife got up from the table halfway through breakfast, took off a shoe and cleaned mud off the sole at the kitchen sink. She then muttered something about the other shoe, not noticing it was still on her foot. Before I could tell her she disappeared upstairs to look for it. She returned a few minutes later wearing a different pair, spotted the cleaned shoe and said "so that's where it is"! It is this not seeing things for what they are/misidentification which is in many ways more difficult to deal with than loss of memory. Which is how I ended up paying her train fare today as her pass was 'lost' ie in her handbag but not in the usual place.