Dear Mr. Zuckerberg, I am not a greedy person. So I will not ask you for billions of dollars. What I am is a fierce and passionate advocate for the more than 500,000 New York City residents affected by a dementia diagnosis. So, as you and your wife consider your philanthropic options, please consider the following: in less than 30 years, as many as 16 million Americans will either have Alzheimer's [http://alzheimers.net/resources/alzheimers-statistics] or be taking care of someone who does. T [...]