We often equate knowledge with power: The more we know, the better we are able to make decisions. Unfortunately, there are cases where ignorance really may be bliss, and Alzheimer's isn't the only one.
The lore and the legend of the horse whisperer honors a whisper heard, not spoken. That all of us could learn to hear and understand horses better might matter to some more than others. That we might all learn to hear and understand one another better matters to us all.