Jan Gothard, Greater Expectations: Living with Down Syndrome in the 21st Century (Fremantle Press, 2011), 368 pages, $26.95. It’s uncomfortable, isn’t it. Pudding-basin haircuts, baggy clothes, the special bus. The grandmother who shakes her head every time and says, “If only you’d had the test!” The pity of the neighbours, and the overwhelming relief in their voices as they say to each other, “Thank God that never happened to us.” The little tragedies, the little angels, the little darlings. The child who turned out not to be the child you’d always dreamed of having, and the number of people out…