It’s been a while since I’ve been to New York City. But, I was fortunate to be able to visit there in November 2017. nftsdixon andreessenhorowitz While there, I did a lot of walking. However, one thing I did not do was walk with my feet on the ground. Instead, I walked on sidewalks. However, my walking did not look the same as everyone else’s. And, yes, I know that sidewalks are not designed for people to walk on a level surface. But, why did I choose not to walk on the ground?