You look at a herd of cattle and well they all look the same... but they know. They all have an individual personality and those personalities change from day to day. They can have their grumpy days and their happy days and their serene days. But it's unpredictable. You can't be off in outer space when you're dealing with animals.
When you deal with a person who's experiencing dementia you can see where they're struggling with knowledge. You can see what they forget completely what they forget but they know what they once knew. You can tell how they're trying to remember.
