Yeah, you can understand dementia a lot better by just observing people with the condition. I watched my dad plug meter leads into an extension cord, sure that he was plugging up a car battery charger, and he was puzzled as to why it wasn't charging. He did this four times. Oh, and he was a master electrician. Yeah, that's what dementia is really like. You just forget a lot of shit that used to be really important, along with shit that wasn't so important, but that's not what you miss.