Today was World Down Syndrome Day, and I bet a lot of people flat-out couldn’t care less. This year, even the United Nations recognized World Down Syndrome Day. I wonder how many countries really paid attention. And by “attention,” I mean funds for research or resources or even a bloody T-shirt. Three years ago, this day would have been a blip on my radar; if Ds had tried to LinkedIn me, I might have declined the request by checking, “I don’t know this person.” Three years ago I was counting down to Opening Day, stalking Time Warner to post the baseball package details and braiding my cats’ fur on quiet Sunday afternoons, avoiding places like Crate and Barrel where only couples shop on the…