On my walk this morning, I was transported back 30 years to Aikido class. My feet arced into the air. My hand and wrist failed to stop the fall, and I took the full impact along my forearm. I was never a good uke; I always tensed when I fell. Rolling on to my stomach while sensing if I had suffered any serious pain or injury, I felt sorry for myself. With my nose to the concrete, I had a ground level view of a transparent patch of ice so elegantly smooth it should been hanging on a wall at MOMA. Hello sidewalk. You were not my friend today.